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Finding the Fourth Proportional to 70,948.80, 106,423.20 and 43,300.80

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Solution

The fourth proportional to 70,948.80, 106,423.20 and 43,300.80 is: 64,951.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,948.80 : 106,423.20 = 43,300.80 : x
  2. Step 2: Convert to fraction form
    70,948.80/106,423.20 = 43,300.80/x
  3. Step 3: Cross multiply
    70,948.80x = 106,423.20 × 43,300.80
  4. Step 4: Simplify right side
    70,948.80x = 4,608,209,698.56
  5. Step 5: Solve for x
    x = 4,608,209,698.56/70,948.80
  6. Step 6: Final answer
    x = 64,951.20

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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.