Home / 87,921.90-121,332.06-47,636.70

Finding the Fourth Proportional to 87,921.90, 121,332.06 and 47,636.70

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Solution

The fourth proportional to 87,921.90, 121,332.06 and 47,636.70 is: 65,738.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,921.90 : 121,332.06 = 47,636.70 : x
  2. Step 2: Convert to fraction form
    87,921.90/121,332.06 = 47,636.70/x
  3. Step 3: Cross multiply
    87,921.90x = 121,332.06 × 47,636.70
  4. Step 4: Simplify right side
    87,921.90x = 5,779,858,942.60
  5. Step 5: Solve for x
    x = 5,779,858,942.60/87,921.90
  6. Step 6: Final answer
    x = 65,738.56

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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.