Home / 78,609,945.90-108,480,272.10-42,846,694.89

Finding the Fourth Proportional to 78,609,945.90, 108,480,272.10 and 42,846,694.89

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Solution

The fourth proportional to 78,609,945.90, 108,480,272.10 and 42,846,694.89 is: 59,127,646.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,609,945.90 : 108,480,272.10 = 42,846,694.89 : x
  2. Step 2: Convert to fraction form
    78,609,945.90/108,480,272.10 = 42,846,694.89/x
  3. Step 3: Cross multiply
    78,609,945.90x = 108,480,272.10 × 42,846,694.89
  4. Step 4: Simplify right side
    78,609,945.90x = 4,648,021,120,252,879
  5. Step 5: Solve for x
    x = 4,648,021,120,252,879/78,609,945.90
  6. Step 6: Final answer
    x = 59,127,646.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.