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Finding the Fourth Proportional to 87,234.40, 130,870.20 and 49,812.40

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Solution

The fourth proportional to 87,234.40, 130,870.20 and 49,812.40 is: 74,729.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,234.40 : 130,870.20 = 49,812.40 : x
  2. Step 2: Convert to fraction form
    87,234.40/130,870.20 = 49,812.40/x
  3. Step 3: Cross multiply
    87,234.40x = 130,870.20 × 49,812.40
  4. Step 4: Simplify right side
    87,234.40x = 6,518,958,750.48
  5. Step 5: Solve for x
    x = 6,518,958,750.48/87,234.40
  6. Step 6: Final answer
    x = 74,729.22

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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.