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Finding the Fourth Proportional to 64,511.04, 89,034.88 and 39,375.12

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Solution

The fourth proportional to 64,511.04, 89,034.88 and 39,375.12 is: 54,343.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,511.04 : 89,034.88 = 39,375.12 : x
  2. Step 2: Convert to fraction form
    64,511.04/89,034.88 = 39,375.12/x
  3. Step 3: Cross multiply
    64,511.04x = 89,034.88 × 39,375.12
  4. Step 4: Simplify right side
    64,511.04x = 3,505,759,084.19
  5. Step 5: Solve for x
    x = 3,505,759,084.19/64,511.04
  6. Step 6: Final answer
    x = 54,343.55

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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.