Home / 87,681.43-121,000.34-47,395.16

Finding the Fourth Proportional to 87,681.43, 121,000.34 and 47,395.16

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Solution

The fourth proportional to 87,681.43, 121,000.34 and 47,395.16 is: 65,405.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,681.43 : 121,000.34 = 47,395.16 : x
  2. Step 2: Convert to fraction form
    87,681.43/121,000.34 = 47,395.16/x
  3. Step 3: Cross multiply
    87,681.43x = 121,000.34 × 47,395.16
  4. Step 4: Simplify right side
    87,681.43x = 5,734,830,237.38
  5. Step 5: Solve for x
    x = 5,734,830,237.38/87,681.43
  6. Step 6: Final answer
    x = 65,405.30

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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.