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Finding the Fourth Proportional to 81,805.04, 112,947 and 62,651

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Solution

The fourth proportional to 81,805.04, 112,947 and 62,651 is: 86,501.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,805.04 : 112,947 = 62,651 : x
  2. Step 2: Convert to fraction form
    81,805.04/112,947 = 62,651/x
  3. Step 3: Cross multiply
    81,805.04x = 112,947 × 62,651
  4. Step 4: Simplify right side
    81,805.04x = 7,076,242,497
  5. Step 5: Solve for x
    x = 7,076,242,497/81,805.04
  6. Step 6: Final answer
    x = 86,501.30

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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.