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Finding the Fourth Proportional to 80,762.67, 111,440.52 and 48,490.47

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Solution

The fourth proportional to 80,762.67, 111,440.52 and 48,490.47 is: 66,909.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,762.67 : 111,440.52 = 48,490.47 : x
  2. Step 2: Convert to fraction form
    80,762.67/111,440.52 = 48,490.47/x
  3. Step 3: Cross multiply
    80,762.67x = 111,440.52 × 48,490.47
  4. Step 4: Simplify right side
    80,762.67x = 5,403,803,191.84
  5. Step 5: Solve for x
    x = 5,403,803,191.84/80,762.67
  6. Step 6: Final answer
    x = 66,909.66

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1.5x scale

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.