Home / 87,877.47-121,270.31-47,590.31

Finding the Fourth Proportional to 87,877.47, 121,270.31 and 47,590.31

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Solution

The fourth proportional to 87,877.47, 121,270.31 and 47,590.31 is: 65,674.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,877.47 : 121,270.31 = 47,590.31 : x
  2. Step 2: Convert to fraction form
    87,877.47/121,270.31 = 47,590.31/x
  3. Step 3: Cross multiply
    87,877.47x = 121,270.31 × 47,590.31
  4. Step 4: Simplify right side
    87,877.47x = 5,771,291,646.70
  5. Step 5: Solve for x
    x = 5,771,291,646.70/87,877.47
  6. Step 6: Final answer
    x = 65,674.30

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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.