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Finding the Fourth Proportional to 77,104.80, 106,423.20 and 48,441.60

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Solution

The fourth proportional to 77,104.80, 106,423.20 and 48,441.60 is: 66,861.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,104.80 : 106,423.20 = 48,441.60 : x
  2. Step 2: Convert to fraction form
    77,104.80/106,423.20 = 48,441.60/x
  3. Step 3: Cross multiply
    77,104.80x = 106,423.20 × 48,441.60
  4. Step 4: Simplify right side
    77,104.80x = 5,155,310,085.12
  5. Step 5: Solve for x
    x = 5,155,310,085.12/77,104.80
  6. Step 6: Final answer
    x = 66,861.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.