Home / 87,840.90-121,220.45-47,554.98

Finding the Fourth Proportional to 87,840.90, 121,220.45 and 47,554.98

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Solution

The fourth proportional to 87,840.90, 121,220.45 and 47,554.98 is: 65,625.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,840.90 : 121,220.45 = 47,554.98 : x
  2. Step 2: Convert to fraction form
    87,840.90/121,220.45 = 47,554.98/x
  3. Step 3: Cross multiply
    87,840.90x = 121,220.45 × 47,554.98
  4. Step 4: Simplify right side
    87,840.90x = 5,764,635,837.57
  5. Step 5: Solve for x
    x = 5,764,635,837.57/87,840.90
  6. Step 6: Final answer
    x = 65,625.87

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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.