Home / 87,708,085.12-121,035,691.52-48,549,021.76

Finding the Fourth Proportional to 87,708,085.12, 121,035,691.52 and 48,549,021.76

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Solution

The fourth proportional to 87,708,085.12, 121,035,691.52 and 48,549,021.76 is: 66,996,838.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,708,085.12 : 121,035,691.52 = 48,549,021.76 : x
  2. Step 2: Convert to fraction form
    87,708,085.12/121,035,691.52 = 48,549,021.76/x
  3. Step 3: Cross multiply
    87,708,085.12x = 121,035,691.52 × 48,549,021.76
  4. Step 4: Simplify right side
    87,708,085.12x = 5,876,164,421,341,127
  5. Step 5: Solve for x
    x = 5,876,164,421,341,127/87,708,085.12
  6. Step 6: Final answer
    x = 66,996,838.58

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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.