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Finding the Fourth Proportional to 66,397.32, 99,510.93 and 36,411.12

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Solution

The fourth proportional to 66,397.32, 99,510.93 and 36,411.12 is: 54,570.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,397.32 : 99,510.93 = 36,411.12 : x
  2. Step 2: Convert to fraction form
    66,397.32/99,510.93 = 36,411.12/x
  3. Step 3: Cross multiply
    66,397.32x = 99,510.93 × 36,411.12
  4. Step 4: Simplify right side
    66,397.32x = 3,623,304,413.54
  5. Step 5: Solve for x
    x = 3,623,304,413.54/66,397.32
  6. Step 6: Final answer
    x = 54,570.04

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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.