Home / 85,255,998.80-127,902,660.60-42,145,854.80

Finding the Fourth Proportional to 85,255,998.80, 127,902,660.60 and 42,145,854.80

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Solution

The fourth proportional to 85,255,998.80, 127,902,660.60 and 42,145,854.80 is: 63,228,007.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,255,998.80 : 127,902,660.60 = 42,145,854.80 : x
  2. Step 2: Convert to fraction form
    85,255,998.80/127,902,660.60 = 42,145,854.80/x
  3. Step 3: Cross multiply
    85,255,998.80x = 127,902,660.60 × 42,145,854.80
  4. Step 4: Simplify right side
    85,255,998.80x = 5,390,566,962,181,280
  5. Step 5: Solve for x
    x = 5,390,566,962,181,280/85,255,998.80
  6. Step 6: Final answer
    x = 63,228,007.86

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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.