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Finding the Fourth Proportional to 72,060.39, 99,484.84 and 47,894.13

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Solution

The fourth proportional to 72,060.39, 99,484.84 and 47,894.13 is: 66,121.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,060.39 : 99,484.84 = 47,894.13 : x
  2. Step 2: Convert to fraction form
    72,060.39/99,484.84 = 47,894.13/x
  3. Step 3: Cross multiply
    72,060.39x = 99,484.84 × 47,894.13
  4. Step 4: Simplify right side
    72,060.39x = 4,764,739,203.87
  5. Step 5: Solve for x
    x = 4,764,739,203.87/72,060.39
  6. Step 6: Final answer
    x = 66,121.47

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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.