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Finding the Fourth Proportional to 70,672.20, 106,008.30 and 41,123.40

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Solution

The fourth proportional to 70,672.20, 106,008.30 and 41,123.40 is: 61,685.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,672.20 : 106,008.30 = 41,123.40 : x
  2. Step 2: Convert to fraction form
    70,672.20/106,008.30 = 41,123.40/x
  3. Step 3: Cross multiply
    70,672.20x = 106,008.30 × 41,123.40
  4. Step 4: Simplify right side
    70,672.20x = 4,359,421,724.22
  5. Step 5: Solve for x
    x = 4,359,421,724.22/70,672.20
  6. Step 6: Final answer
    x = 61,685.10

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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.