Home / 42,128,864.70-63,198,217.80-13,377,906.60

Finding the Fourth Proportional to 42,128,864.70, 63,198,217.80 and 13,377,906.60

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Solution

The fourth proportional to 42,128,864.70, 63,198,217.80 and 13,377,906.60 is: 20,068,422.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,128,864.70 : 63,198,217.80 = 13,377,906.60 : x
  2. Step 2: Convert to fraction form
    42,128,864.70/63,198,217.80 = 13,377,906.60/x
  3. Step 3: Cross multiply
    42,128,864.70x = 63,198,217.80 × 13,377,906.60
  4. Step 4: Simplify right side
    42,128,864.70x = 845,459,855,014,857.38
  5. Step 5: Solve for x
    x = 845,459,855,014,857.38/42,128,864.70
  6. Step 6: Final answer
    x = 20,068,422.47

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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.