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Finding the Fourth Proportional to 67,503.60, 101,255.40 and 45,385.20

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Solution

The fourth proportional to 67,503.60, 101,255.40 and 45,385.20 is: 68,077.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,503.60 : 101,255.40 = 45,385.20 : x
  2. Step 2: Convert to fraction form
    67,503.60/101,255.40 = 45,385.20/x
  3. Step 3: Cross multiply
    67,503.60x = 101,255.40 × 45,385.20
  4. Step 4: Simplify right side
    67,503.60x = 4,595,496,580.08
  5. Step 5: Solve for x
    x = 4,595,496,580.08/67,503.60
  6. Step 6: Final answer
    x = 68,077.80

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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.