Home / 87,881.28-121,275.56-47,594.12

Finding the Fourth Proportional to 87,881.28, 121,275.56 and 47,594.12

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Solution

The fourth proportional to 87,881.28, 121,275.56 and 47,594.12 is: 65,679.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,881.28 : 121,275.56 = 47,594.12 : x
  2. Step 2: Convert to fraction form
    87,881.28/121,275.56 = 47,594.12/x
  3. Step 3: Cross multiply
    87,881.28x = 121,275.56 × 47,594.12
  4. Step 4: Simplify right side
    87,881.28x = 5,772,003,555.71
  5. Step 5: Solve for x
    x = 5,772,003,555.71/87,881.28
  6. Step 6: Final answer
    x = 65,679.56

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1.5x scale

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.