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Finding the Fourth Proportional to 86,681.95, 130,042.87 and 36,763.98

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Solution

The fourth proportional to 86,681.95, 130,042.87 and 36,763.98 is: 55,154.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,681.95 : 130,042.87 = 36,763.98 : x
  2. Step 2: Convert to fraction form
    86,681.95/130,042.87 = 36,763.98/x
  3. Step 3: Cross multiply
    86,681.95x = 130,042.87 × 36,763.98
  4. Step 4: Simplify right side
    86,681.95x = 4,780,892,892.25
  5. Step 5: Solve for x
    x = 4,780,892,892.25/86,681.95
  6. Step 6: Final answer
    x = 55,154.42

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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.