Home / 57,088.87-78,781.38-31,247.29

Finding the Fourth Proportional to 57,088.87, 78,781.38 and 31,247.29

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Solution

The fourth proportional to 57,088.87, 78,781.38 and 31,247.29 is: 43,120.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,088.87 : 78,781.38 = 31,247.29 : x
  2. Step 2: Convert to fraction form
    57,088.87/78,781.38 = 31,247.29/x
  3. Step 3: Cross multiply
    57,088.87x = 78,781.38 × 31,247.29
  4. Step 4: Simplify right side
    57,088.87x = 2,461,704,627.46
  5. Step 5: Solve for x
    x = 2,461,704,627.46/57,088.87
  6. Step 6: Final answer
    x = 43,120.57

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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.