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Finding the Fourth Proportional to 67,748.80, 101,623.20 and 45,630.40

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Solution

The fourth proportional to 67,748.80, 101,623.20 and 45,630.40 is: 68,445.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,748.80 : 101,623.20 = 45,630.40 : x
  2. Step 2: Convert to fraction form
    67,748.80/101,623.20 = 45,630.40/x
  3. Step 3: Cross multiply
    67,748.80x = 101,623.20 × 45,630.40
  4. Step 4: Simplify right side
    67,748.80x = 4,637,107,265.28
  5. Step 5: Solve for x
    x = 4,637,107,265.28/67,748.80
  6. Step 6: Final answer
    x = 68,445.60

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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.