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Finding the Fourth Proportional to 66,905.28, 100,370.88 and 25,381.44

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Solution

The fourth proportional to 66,905.28, 100,370.88 and 25,381.44 is: 38,077.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,905.28 : 100,370.88 = 25,381.44 : x
  2. Step 2: Convert to fraction form
    66,905.28/100,370.88 = 25,381.44/x
  3. Step 3: Cross multiply
    66,905.28x = 100,370.88 × 25,381.44
  4. Step 4: Simplify right side
    66,905.28x = 2,547,557,468.47
  5. Step 5: Solve for x
    x = 2,547,557,468.47/66,905.28
  6. Step 6: Final answer
    x = 38,077.08

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1.5x scale

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.