Home / 87,049,442.02-120,128,224.50-47,890,378.69

Finding the Fourth Proportional to 87,049,442.02, 120,128,224.50 and 47,890,378.69

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Solution

The fourth proportional to 87,049,442.02, 120,128,224.50 and 47,890,378.69 is: 66,088,719.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,049,442.02 : 120,128,224.50 = 47,890,378.69 : x
  2. Step 2: Convert to fraction form
    87,049,442.02/120,128,224.50 = 47,890,378.69/x
  3. Step 3: Cross multiply
    87,049,442.02x = 120,128,224.50 × 47,890,378.69
  4. Step 4: Simplify right side
    87,049,442.02x = 5,752,986,162,662,336
  5. Step 5: Solve for x
    x = 5,752,986,162,662,336/87,049,442.02
  6. Step 6: Final answer
    x = 66,088,719.57

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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.