Home / 87,851.09-121,234.34-47,564.85

Finding the Fourth Proportional to 87,851.09, 121,234.34 and 47,564.85

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Solution

The fourth proportional to 87,851.09, 121,234.34 and 47,564.85 is: 65,639.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,851.09 : 121,234.34 = 47,564.85 : x
  2. Step 2: Convert to fraction form
    87,851.09/121,234.34 = 47,564.85/x
  3. Step 3: Cross multiply
    87,851.09x = 121,234.34 × 47,564.85
  4. Step 4: Simplify right side
    87,851.09x = 5,766,492,590.78
  5. Step 5: Solve for x
    x = 5,766,492,590.78/87,851.09
  6. Step 6: Final answer
    x = 65,639.40

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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.