Home / 56,916.92-78,549.66-31,428.14

Finding the Fourth Proportional to 56,916.92, 78,549.66 and 31,428.14

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Solution

The fourth proportional to 56,916.92, 78,549.66 and 31,428.14 is: 43,373.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,916.92 : 78,549.66 = 31,428.14 : x
  2. Step 2: Convert to fraction form
    56,916.92/78,549.66 = 31,428.14/x
  3. Step 3: Cross multiply
    56,916.92x = 78,549.66 × 31,428.14
  4. Step 4: Simplify right side
    56,916.92x = 2,468,669,711.43
  5. Step 5: Solve for x
    x = 2,468,669,711.43/56,916.92
  6. Step 6: Final answer
    x = 43,373.21

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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.