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Finding the Fourth Proportional to 67,928.95, 101,898.10 and 28,446.31

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Solution

The fourth proportional to 67,928.95, 101,898.10 and 28,446.31 is: 42,671.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,928.95 : 101,898.10 = 28,446.31 : x
  2. Step 2: Convert to fraction form
    67,928.95/101,898.10 = 28,446.31/x
  3. Step 3: Cross multiply
    67,928.95x = 101,898.10 × 28,446.31
  4. Step 4: Simplify right side
    67,928.95x = 2,898,624,431.52
  5. Step 5: Solve for x
    x = 2,898,624,431.52/67,928.95
  6. Step 6: Final answer
    x = 42,671.42

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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.