Home / 87,915.39-121,323.09-47,630.17

Finding the Fourth Proportional to 87,915.39, 121,323.09 and 47,630.17

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Solution

The fourth proportional to 87,915.39, 121,323.09 and 47,630.17 is: 65,729.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,915.39 : 121,323.09 = 47,630.17 : x
  2. Step 2: Convert to fraction form
    87,915.39/121,323.09 = 47,630.17/x
  3. Step 3: Cross multiply
    87,915.39x = 121,323.09 × 47,630.17
  4. Step 4: Simplify right side
    87,915.39x = 5,778,639,401.63
  5. Step 5: Solve for x
    x = 5,778,639,401.63/87,915.39
  6. Step 6: Final answer
    x = 65,729.55

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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.