Home / 42,785,113.20-64,170,783.40-12,485,874.80

Finding the Fourth Proportional to 42,785,113.20, 64,170,783.40 and 12,485,874.80

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Solution

The fourth proportional to 42,785,113.20, 64,170,783.40 and 12,485,874.80 is: 18,726,802.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,785,113.20 : 64,170,783.40 = 12,485,874.80 : x
  2. Step 2: Convert to fraction form
    42,785,113.20/64,170,783.40 = 12,485,874.80/x
  3. Step 3: Cross multiply
    42,785,113.20x = 64,170,783.40 × 12,485,874.80
  4. Step 4: Simplify right side
    42,785,113.20x = 801,228,367,350,318.38
  5. Step 5: Solve for x
    x = 801,228,367,350,318.38/42,785,113.20
  6. Step 6: Final answer
    x = 18,726,802.56

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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.