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Finding the Fourth Proportional to 88,991,999.80, 133,487,999.70 and 69,881,702.20

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Solution

The fourth proportional to 88,991,999.80, 133,487,999.70 and 69,881,702.20 is: 104,822,553.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,991,999.80 : 133,487,999.70 = 69,881,702.20 : x
  2. Step 2: Convert to fraction form
    88,991,999.80/133,487,999.70 = 69,881,702.20/x
  3. Step 3: Cross multiply
    88,991,999.80x = 133,487,999.70 × 69,881,702.20
  4. Step 4: Simplify right side
    88,991,999.80x = 9,328,368,642,309,090
  5. Step 5: Solve for x
    x = 9,328,368,642,309,090/88,991,999.80
  6. Step 6: Final answer
    x = 104,822,553.30

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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.