Home / 48,331.72-72,504.18-45,415.72

Finding the Fourth Proportional to 48,331.72, 72,504.18 and 45,415.72

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Solution

The fourth proportional to 48,331.72, 72,504.18 and 45,415.72 is: 68,129.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,331.72 : 72,504.18 = 45,415.72 : x
  2. Step 2: Convert to fraction form
    48,331.72/72,504.18 = 45,415.72/x
  3. Step 3: Cross multiply
    48,331.72x = 72,504.18 × 45,415.72
  4. Step 4: Simplify right side
    48,331.72x = 3,292,829,537.71
  5. Step 5: Solve for x
    x = 3,292,829,537.71/48,331.72
  6. Step 6: Final answer
    x = 68,129.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.