Home / 39,428,899,152.79-54,411,928,660.31-21,364,401,392.93

Finding the Fourth Proportional to 39,428,899,152.79, 54,411,928,660.31 and 21,364,401,392.93

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Solution

The fourth proportional to 39,428,899,152.79, 54,411,928,660.31 and 21,364,401,392.93 is: 29,482,899,838.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,428,899,152.79 : 54,411,928,660.31 = 21,364,401,392.93 : x
  2. Step 2: Convert to fraction form
    39,428,899,152.79/54,411,928,660.31 = 21,364,401,392.93/x
  3. Step 3: Cross multiply
    39,428,899,152.79x = 54,411,928,660.31 × 21,364,401,392.93
  4. Step 4: Simplify right side
    39,428,899,152.79x = 1,162,478,284,462,334,672,896
  5. Step 5: Solve for x
    x = 1,162,478,284,462,334,672,896/39,428,899,152.79
  6. Step 6: Final answer
    x = 29,482,899,838.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.