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Finding the Fourth Proportional to 88,731,657.70, 133,097,486.55 and 85,330,435.30

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Solution

The fourth proportional to 88,731,657.70, 133,097,486.55 and 85,330,435.30 is: 127,995,652.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,731,657.70 : 133,097,486.55 = 85,330,435.30 : x
  2. Step 2: Convert to fraction form
    88,731,657.70/133,097,486.55 = 85,330,435.30/x
  3. Step 3: Cross multiply
    88,731,657.70x = 133,097,486.55 × 85,330,435.30
  4. Step 4: Simplify right side
    88,731,657.70x = 11,357,266,464,647,394
  5. Step 5: Solve for x
    x = 11,357,266,464,647,394/88,731,657.70
  6. Step 6: Final answer
    x = 127,995,652.95

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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.