Home / 81,770,601.60-122,655,902.40-76,731,753.60

Finding the Fourth Proportional to 81,770,601.60, 122,655,902.40 and 76,731,753.60

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Solution

The fourth proportional to 81,770,601.60, 122,655,902.40 and 76,731,753.60 is: 115,097,630.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,770,601.60 : 122,655,902.40 = 76,731,753.60 : x
  2. Step 2: Convert to fraction form
    81,770,601.60/122,655,902.40 = 76,731,753.60/x
  3. Step 3: Cross multiply
    81,770,601.60x = 122,655,902.40 × 76,731,753.60
  4. Step 4: Simplify right side
    81,770,601.60x = 9,411,602,480,542,448
  5. Step 5: Solve for x
    x = 9,411,602,480,542,448/81,770,601.60
  6. Step 6: Final answer
    x = 115,097,630.40

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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.