Home / 87,889.19-121,287.20-47,603.29

Finding the Fourth Proportional to 87,889.19, 121,287.20 and 47,603.29

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Solution

The fourth proportional to 87,889.19, 121,287.20 and 47,603.29 is: 65,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,889.19 : 121,287.20 = 47,603.29 : x
  2. Step 2: Convert to fraction form
    87,889.19/121,287.20 = 47,603.29/x
  3. Step 3: Cross multiply
    87,889.19x = 121,287.20 × 47,603.29
  4. Step 4: Simplify right side
    87,889.19x = 5,773,669,213.65
  5. Step 5: Solve for x
    x = 5,773,669,213.65/87,889.19
  6. Step 6: Final answer
    x = 65,692.60

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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.