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Finding the Fourth Proportional to 72,974.03, 99,838.13 and 72,658.97

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Solution

The fourth proportional to 72,974.03, 99,838.13 and 72,658.97 is: 99,407.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,974.03 : 99,838.13 = 72,658.97 : x
  2. Step 2: Convert to fraction form
    72,974.03/99,838.13 = 72,658.97/x
  3. Step 3: Cross multiply
    72,974.03x = 99,838.13 × 72,658.97
  4. Step 4: Simplify right side
    72,974.03x = 7,254,134,830.04
  5. Step 5: Solve for x
    x = 7,254,134,830.04/72,974.03
  6. Step 6: Final answer
    x = 99,407.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.