Home / 80,319.26-120,663.60-56,681.24

Finding the Fourth Proportional to 80,319.26, 120,663.60 and 56,681.24

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Solution

The fourth proportional to 80,319.26, 120,663.60 and 56,681.24 is: 85,152.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,319.26 : 120,663.60 = 56,681.24 : x
  2. Step 2: Convert to fraction form
    80,319.26/120,663.60 = 56,681.24/x
  3. Step 3: Cross multiply
    80,319.26x = 120,663.60 × 56,681.24
  4. Step 4: Simplify right side
    80,319.26x = 6,839,362,470.86
  5. Step 5: Solve for x
    x = 6,839,362,470.86/80,319.26
  6. Step 6: Final answer
    x = 85,152.21

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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.