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Finding the Fourth Proportional to 98,805.76, 136,373.12 and 62,987.52

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Solution

The fourth proportional to 98,805.76, 136,373.12 and 62,987.52 is: 86,936.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,805.76 : 136,373.12 = 62,987.52 : x
  2. Step 2: Convert to fraction form
    98,805.76/136,373.12 = 62,987.52/x
  3. Step 3: Cross multiply
    98,805.76x = 136,373.12 × 62,987.52
  4. Step 4: Simplify right side
    98,805.76x = 8,589,804,623.46
  5. Step 5: Solve for x
    x = 8,589,804,623.46/98,805.76
  6. Step 6: Final answer
    x = 86,936.27

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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.