Home / 87,756.89-121,104.05-47,470.55

Finding the Fourth Proportional to 87,756.89, 121,104.05 and 47,470.55

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Solution

The fourth proportional to 87,756.89, 121,104.05 and 47,470.55 is: 65,509.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,756.89 : 121,104.05 = 47,470.55 : x
  2. Step 2: Convert to fraction form
    87,756.89/121,104.05 = 47,470.55/x
  3. Step 3: Cross multiply
    87,756.89x = 121,104.05 × 47,470.55
  4. Step 4: Simplify right side
    87,756.89x = 5,748,875,017.85
  5. Step 5: Solve for x
    x = 5,748,875,017.85/87,756.89
  6. Step 6: Final answer
    x = 65,509.11

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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.