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Finding the Fourth Proportional to 66,988, 100,411.52 and 22,599.20

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Solution

The fourth proportional to 66,988, 100,411.52 and 22,599.20 is: 33,875.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,988 : 100,411.52 = 22,599.20 : x
  2. Step 2: Convert to fraction form
    66,988/100,411.52 = 22,599.20/x
  3. Step 3: Cross multiply
    66,988x = 100,411.52 × 22,599.20
  4. Step 4: Simplify right side
    66,988x = 2,269,220,022.78
  5. Step 5: Solve for x
    x = 2,269,220,022.78/66,988
  6. Step 6: Final answer
    x = 33,875.02

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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.