Home / 39,931.12-54,705.56-38,435.68

Finding the Fourth Proportional to 39,931.12, 54,705.56 and 38,435.68

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Solution

The fourth proportional to 39,931.12, 54,705.56 and 38,435.68 is: 52,656.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,931.12 : 54,705.56 = 38,435.68 : x
  2. Step 2: Convert to fraction form
    39,931.12/54,705.56 = 38,435.68/x
  3. Step 3: Cross multiply
    39,931.12x = 54,705.56 × 38,435.68
  4. Step 4: Simplify right side
    39,931.12x = 2,102,645,398.38
  5. Step 5: Solve for x
    x = 2,102,645,398.38/39,931.12
  6. Step 6: Final answer
    x = 52,656.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.