Home / 9,121,156.15-12,587,194.96-4,991,187.79

Finding the Fourth Proportional to 9,121,156.15, 12,587,194.96 and 4,991,187.79

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Solution

The fourth proportional to 9,121,156.15, 12,587,194.96 and 4,991,187.79 is: 6,887,838.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121,156.15 : 12,587,194.96 = 4,991,187.79 : x
  2. Step 2: Convert to fraction form
    9,121,156.15/12,587,194.96 = 4,991,187.79/x
  3. Step 3: Cross multiply
    9,121,156.15x = 12,587,194.96 × 4,991,187.79
  4. Step 4: Simplify right side
    9,121,156.15x = 62,825,053,794,701.55
  5. Step 5: Solve for x
    x = 62,825,053,794,701.55/9,121,156.15
  6. Step 6: Final answer
    x = 6,887,838.86

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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.