Home / 55,588.78-76,711.75-30,438.28

Finding the Fourth Proportional to 55,588.78, 76,711.75 and 30,438.28

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Solution

The fourth proportional to 55,588.78, 76,711.75 and 30,438.28 is: 42,004.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,588.78 : 76,711.75 = 30,438.28 : x
  2. Step 2: Convert to fraction form
    55,588.78/76,711.75 = 30,438.28/x
  3. Step 3: Cross multiply
    55,588.78x = 76,711.75 × 30,438.28
  4. Step 4: Simplify right side
    55,588.78x = 2,334,973,725.79
  5. Step 5: Solve for x
    x = 2,334,973,725.79/55,588.78
  6. Step 6: Final answer
    x = 42,004.41

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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.