Home / 87,800.81-121,165.10-47,514.57

Finding the Fourth Proportional to 87,800.81, 121,165.10 and 47,514.57

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Solution

The fourth proportional to 87,800.81, 121,165.10 and 47,514.57 is: 65,570.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,800.81 : 121,165.10 = 47,514.57 : x
  2. Step 2: Convert to fraction form
    87,800.81/121,165.10 = 47,514.57/x
  3. Step 3: Cross multiply
    87,800.81x = 121,165.10 × 47,514.57
  4. Step 4: Simplify right side
    87,800.81x = 5,757,107,379.01
  5. Step 5: Solve for x
    x = 5,757,107,379.01/87,800.81
  6. Step 6: Final answer
    x = 65,570.10

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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.