Home / 67,977.60-102,002.85-28,538.70

Finding the Fourth Proportional to 67,977.60, 102,002.85 and 28,538.70

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Solution

The fourth proportional to 67,977.60, 102,002.85 and 28,538.70 is: 42,823.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,977.60 : 102,002.85 = 28,538.70 : x
  2. Step 2: Convert to fraction form
    67,977.60/102,002.85 = 28,538.70/x
  3. Step 3: Cross multiply
    67,977.60x = 102,002.85 × 28,538.70
  4. Step 4: Simplify right side
    67,977.60x = 2,911,028,735.30
  5. Step 5: Solve for x
    x = 2,911,028,735.30/67,977.60
  6. Step 6: Final answer
    x = 42,823.35

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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.