Home / 66,708.85-99,931.77-54,242.95

Finding the Fourth Proportional to 66,708.85, 99,931.77 and 54,242.95

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Solution

The fourth proportional to 66,708.85, 99,931.77 and 54,242.95 is: 81,257.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,708.85 : 99,931.77 = 54,242.95 : x
  2. Step 2: Convert to fraction form
    66,708.85/99,931.77 = 54,242.95/x
  3. Step 3: Cross multiply
    66,708.85x = 99,931.77 × 54,242.95
  4. Step 4: Simplify right side
    66,708.85x = 5,420,593,503.86
  5. Step 5: Solve for x
    x = 5,420,593,503.86/66,708.85
  6. Step 6: Final answer
    x = 81,257.49

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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.