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Finding the Fourth Proportional to 72,010.80, 99,428.04 and 43,754.40

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Solution

The fourth proportional to 72,010.80, 99,428.04 and 43,754.40 is: 60,413.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,010.80 : 99,428.04 = 43,754.40 : x
  2. Step 2: Convert to fraction form
    72,010.80/99,428.04 = 43,754.40/x
  3. Step 3: Cross multiply
    72,010.80x = 99,428.04 × 43,754.40
  4. Step 4: Simplify right side
    72,010.80x = 4,350,414,233.38
  5. Step 5: Solve for x
    x = 4,350,414,233.38/72,010.80
  6. Step 6: Final answer
    x = 60,413.36

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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.