Home / 87,710.15-121,040.03-47,423.90

Finding the Fourth Proportional to 87,710.15, 121,040.03 and 47,423.90

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Solution

The fourth proportional to 87,710.15, 121,040.03 and 47,423.90 is: 65,445.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,710.15 : 121,040.03 = 47,423.90 : x
  2. Step 2: Convert to fraction form
    87,710.15/121,040.03 = 47,423.90/x
  3. Step 3: Cross multiply
    87,710.15x = 121,040.03 × 47,423.90
  4. Step 4: Simplify right side
    87,710.15x = 5,740,190,699.88
  5. Step 5: Solve for x
    x = 5,740,190,699.88/87,710.15
  6. Step 6: Final answer
    x = 65,445.00

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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.