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Finding the Fourth Proportional to 67,856.60, 101,736.30 and 28,393.40

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Solution

The fourth proportional to 67,856.60, 101,736.30 and 28,393.40 is: 42,569.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,856.60 : 101,736.30 = 28,393.40 : x
  2. Step 2: Convert to fraction form
    67,856.60/101,736.30 = 28,393.40/x
  3. Step 3: Cross multiply
    67,856.60x = 101,736.30 × 28,393.40
  4. Step 4: Simplify right side
    67,856.60x = 2,888,639,460.42
  5. Step 5: Solve for x
    x = 2,888,639,460.42/67,856.60
  6. Step 6: Final answer
    x = 42,569.76

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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.