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Finding the Fourth Proportional to 62,957.90, 94,416.81 and 20,830.10

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Solution

The fourth proportional to 62,957.90, 94,416.81 and 20,830.10 is: 31,238.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,957.90 : 94,416.81 = 20,830.10 : x
  2. Step 2: Convert to fraction form
    62,957.90/94,416.81 = 20,830.10/x
  3. Step 3: Cross multiply
    62,957.90x = 94,416.81 × 20,830.10
  4. Step 4: Simplify right side
    62,957.90x = 1,966,711,593.98
  5. Step 5: Solve for x
    x = 1,966,711,593.98/62,957.90
  6. Step 6: Final answer
    x = 31,238.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.