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Finding the Fourth Proportional to 71,386.20, 107,079.30 and 27,014.40

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Solution

The fourth proportional to 71,386.20, 107,079.30 and 27,014.40 is: 40,521.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,386.20 : 107,079.30 = 27,014.40 : x
  2. Step 2: Convert to fraction form
    71,386.20/107,079.30 = 27,014.40/x
  3. Step 3: Cross multiply
    71,386.20x = 107,079.30 × 27,014.40
  4. Step 4: Simplify right side
    71,386.20x = 2,892,683,041.92
  5. Step 5: Solve for x
    x = 2,892,683,041.92/71,386.20
  6. Step 6: Final answer
    x = 40,521.60

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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.