Home / 39,396.72-54,330.84-30,430.80

Finding the Fourth Proportional to 39,396.72, 54,330.84 and 30,430.80

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Solution

The fourth proportional to 39,396.72, 54,330.84 and 30,430.80 is: 41,966.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,396.72 : 54,330.84 = 30,430.80 : x
  2. Step 2: Convert to fraction form
    39,396.72/54,330.84 = 30,430.80/x
  3. Step 3: Cross multiply
    39,396.72x = 54,330.84 × 30,430.80
  4. Step 4: Simplify right side
    39,396.72x = 1,653,330,925.87
  5. Step 5: Solve for x
    x = 1,653,330,925.87/39,396.72
  6. Step 6: Final answer
    x = 41,966.21

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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.