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Finding the Fourth Proportional to 67,699.32, 101,532.50 and 28,256.76

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Solution

The fourth proportional to 67,699.32, 101,532.50 and 28,256.76 is: 42,378.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,699.32 : 101,532.50 = 28,256.76 : x
  2. Step 2: Convert to fraction form
    67,699.32/101,532.50 = 28,256.76/x
  3. Step 3: Cross multiply
    67,699.32x = 101,532.50 × 28,256.76
  4. Step 4: Simplify right side
    67,699.32x = 2,868,979,484.70
  5. Step 5: Solve for x
    x = 2,868,979,484.70/67,699.32
  6. Step 6: Final answer
    x = 42,378.26

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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.