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Finding the Fourth Proportional to 81,671,640.80, 122,472,031.80 and 27,063,125.60

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Solution

The fourth proportional to 81,671,640.80, 122,472,031.80 and 27,063,125.60 is: 40,582,948.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,671,640.80 : 122,472,031.80 = 27,063,125.60 : x
  2. Step 2: Convert to fraction form
    81,671,640.80/122,472,031.80 = 27,063,125.60/x
  3. Step 3: Cross multiply
    81,671,640.80x = 122,472,031.80 × 27,063,125.60
  4. Step 4: Simplify right side
    81,671,640.80x = 3,314,475,979,090,594
  5. Step 5: Solve for x
    x = 3,314,475,979,090,594/81,671,640.80
  6. Step 6: Final answer
    x = 40,582,948.34

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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.