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Finding the Fourth Proportional to 83,987.93, 115,901.60 and 45,747.90

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Solution

The fourth proportional to 83,987.93, 115,901.60 and 45,747.90 is: 63,131.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,987.93 : 115,901.60 = 45,747.90 : x
  2. Step 2: Convert to fraction form
    83,987.93/115,901.60 = 45,747.90/x
  3. Step 3: Cross multiply
    83,987.93x = 115,901.60 × 45,747.90
  4. Step 4: Simplify right side
    83,987.93x = 5,302,254,577.90
  5. Step 5: Solve for x
    x = 5,302,254,577.90/83,987.93
  6. Step 6: Final answer
    x = 63,131.15

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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.