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Finding the Fourth Proportional to 90,797.64, 136,196.46 and 28,473

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Solution

The fourth proportional to 90,797.64, 136,196.46 and 28,473 is: 42,709.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,797.64 : 136,196.46 = 28,473 : x
  2. Step 2: Convert to fraction form
    90,797.64/136,196.46 = 28,473/x
  3. Step 3: Cross multiply
    90,797.64x = 136,196.46 × 28,473
  4. Step 4: Simplify right side
    90,797.64x = 3,877,921,805.58
  5. Step 5: Solve for x
    x = 3,877,921,805.58/90,797.64
  6. Step 6: Final answer
    x = 42,709.50

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Double scale
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Similar ratio
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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.