Home / 84,002,138.10-126,003,207.15-61,043,886.90

Finding the Fourth Proportional to 84,002,138.10, 126,003,207.15 and 61,043,886.90

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Solution

The fourth proportional to 84,002,138.10, 126,003,207.15 and 61,043,886.90 is: 91,565,830.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,002,138.10 : 126,003,207.15 = 61,043,886.90 : x
  2. Step 2: Convert to fraction form
    84,002,138.10/126,003,207.15 = 61,043,886.90/x
  3. Step 3: Cross multiply
    84,002,138.10x = 126,003,207.15 × 61,043,886.90
  4. Step 4: Simplify right side
    84,002,138.10x = 7,691,725,526,301,872
  5. Step 5: Solve for x
    x = 7,691,725,526,301,872/84,002,138.10
  6. Step 6: Final answer
    x = 91,565,830.35

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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.