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Finding the Fourth Proportional to 48,478.88, 72,643.80 and 28,718.12

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Solution

The fourth proportional to 48,478.88, 72,643.80 and 28,718.12 is: 43,033.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,478.88 : 72,643.80 = 28,718.12 : x
  2. Step 2: Convert to fraction form
    48,478.88/72,643.80 = 28,718.12/x
  3. Step 3: Cross multiply
    48,478.88x = 72,643.80 × 28,718.12
  4. Step 4: Simplify right side
    48,478.88x = 2,086,193,365.66
  5. Step 5: Solve for x
    x = 2,086,193,365.66/48,478.88
  6. Step 6: Final answer
    x = 43,033.04

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1.5x scale

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.