Home / 87,901.50-121,304.21-47,615.60

Finding the Fourth Proportional to 87,901.50, 121,304.21 and 47,615.60

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Solution

The fourth proportional to 87,901.50, 121,304.21 and 47,615.60 is: 65,709.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,901.50 : 121,304.21 = 47,615.60 : x
  2. Step 2: Convert to fraction form
    87,901.50/121,304.21 = 47,615.60/x
  3. Step 3: Cross multiply
    87,901.50x = 121,304.21 × 47,615.60
  4. Step 4: Simplify right side
    87,901.50x = 5,775,971,897.08
  5. Step 5: Solve for x
    x = 5,775,971,897.08/87,901.50
  6. Step 6: Final answer
    x = 65,709.59

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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.