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Finding the Fourth Proportional to 112,792, 155,658.06 and 62,491

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Solution

The fourth proportional to 112,792, 155,658.06 and 62,491 is: 86,240.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,792 : 155,658.06 = 62,491 : x
  2. Step 2: Convert to fraction form
    112,792/155,658.06 = 62,491/x
  3. Step 3: Cross multiply
    112,792x = 155,658.06 × 62,491
  4. Step 4: Simplify right side
    112,792x = 9,727,227,827.46
  5. Step 5: Solve for x
    x = 9,727,227,827.46/112,792
  6. Step 6: Final answer
    x = 86,240.41

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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.