Home / 87,830.28-121,205.07-47,543.22

Finding the Fourth Proportional to 87,830.28, 121,205.07 and 47,543.22

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Solution

The fourth proportional to 87,830.28, 121,205.07 and 47,543.22 is: 65,609.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,830.28 : 121,205.07 = 47,543.22 : x
  2. Step 2: Convert to fraction form
    87,830.28/121,205.07 = 47,543.22/x
  3. Step 3: Cross multiply
    87,830.28x = 121,205.07 × 47,543.22
  4. Step 4: Simplify right side
    87,830.28x = 5,762,479,308.13
  5. Step 5: Solve for x
    x = 5,762,479,308.13/87,830.28
  6. Step 6: Final answer
    x = 65,609.26

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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.