Home / 87,855.89-121,241.34-47,570.13

Finding the Fourth Proportional to 87,855.89, 121,241.34 and 47,570.13

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Solution

The fourth proportional to 87,855.89, 121,241.34 and 47,570.13 is: 65,646.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,855.89 : 121,241.34 = 47,570.13 : x
  2. Step 2: Convert to fraction form
    87,855.89/121,241.34 = 47,570.13/x
  3. Step 3: Cross multiply
    87,855.89x = 121,241.34 × 47,570.13
  4. Step 4: Simplify right side
    87,855.89x = 5,767,466,305.17
  5. Step 5: Solve for x
    x = 5,767,466,305.17/87,855.89
  6. Step 6: Final answer
    x = 65,646.90

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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.