Home / 87,757.08-121,104.86-47,470.72

Finding the Fourth Proportional to 87,757.08, 121,104.86 and 47,470.72

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Solution

The fourth proportional to 87,757.08, 121,104.86 and 47,470.72 is: 65,509.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,757.08 : 121,104.86 = 47,470.72 : x
  2. Step 2: Convert to fraction form
    87,757.08/121,104.86 = 47,470.72/x
  3. Step 3: Cross multiply
    87,757.08x = 121,104.86 × 47,470.72
  4. Step 4: Simplify right side
    87,757.08x = 5,748,934,899.70
  5. Step 5: Solve for x
    x = 5,748,934,899.70/87,757.08
  6. Step 6: Final answer
    x = 65,509.64

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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.