Home / 67,845.60-101,782.98-28,382.40

Finding the Fourth Proportional to 67,845.60, 101,782.98 and 28,382.40

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Solution

The fourth proportional to 67,845.60, 101,782.98 and 28,382.40 is: 42,579.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,845.60 : 101,782.98 = 28,382.40 : x
  2. Step 2: Convert to fraction form
    67,845.60/101,782.98 = 28,382.40/x
  3. Step 3: Cross multiply
    67,845.60x = 101,782.98 × 28,382.40
  4. Step 4: Simplify right side
    67,845.60x = 2,888,845,251.55
  5. Step 5: Solve for x
    x = 2,888,845,251.55/67,845.60
  6. Step 6: Final answer
    x = 42,579.70

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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.