Home / 57,088.32-78,781.32-31,938

Finding the Fourth Proportional to 57,088.32, 78,781.32 and 31,938

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Solution

The fourth proportional to 57,088.32, 78,781.32 and 31,938 is: 44,074.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,088.32 : 78,781.32 = 31,938 : x
  2. Step 2: Convert to fraction form
    57,088.32/78,781.32 = 31,938/x
  3. Step 3: Cross multiply
    57,088.32x = 78,781.32 × 31,938
  4. Step 4: Simplify right side
    57,088.32x = 2,516,117,798.16
  5. Step 5: Solve for x
    x = 2,516,117,798.16/57,088.32
  6. Step 6: Final answer
    x = 44,074.13

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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.