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Finding the Fourth Proportional to 68,374,463.80, 102,561,695.70 and 61,655,999.80

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Solution

The fourth proportional to 68,374,463.80, 102,561,695.70 and 61,655,999.80 is: 92,483,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,374,463.80 : 102,561,695.70 = 61,655,999.80 : x
  2. Step 2: Convert to fraction form
    68,374,463.80/102,561,695.70 = 61,655,999.80/x
  3. Step 3: Cross multiply
    68,374,463.80x = 102,561,695.70 × 61,655,999.80
  4. Step 4: Simplify right side
    68,374,463.80x = 6,323,543,889,566,861
  5. Step 5: Solve for x
    x = 6,323,543,889,566,861/68,374,463.80
  6. Step 6: Final answer
    x = 92,483,999.70

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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.