Home / 87,855.40-121,240.64-47,569.64

Finding the Fourth Proportional to 87,855.40, 121,240.64 and 47,569.64

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Solution

The fourth proportional to 87,855.40, 121,240.64 and 47,569.64 is: 65,646.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,855.40 : 121,240.64 = 47,569.64 : x
  2. Step 2: Convert to fraction form
    87,855.40/121,240.64 = 47,569.64/x
  3. Step 3: Cross multiply
    87,855.40x = 121,240.64 × 47,569.64
  4. Step 4: Simplify right side
    87,855.40x = 5,767,373,598.17
  5. Step 5: Solve for x
    x = 5,767,373,598.17/87,855.40
  6. Step 6: Final answer
    x = 65,646.20

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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.