Home / 70,551.12-105,688.22-40,906.65

Finding the Fourth Proportional to 70,551.12, 105,688.22 and 40,906.65

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Solution

The fourth proportional to 70,551.12, 105,688.22 and 40,906.65 is: 61,279.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,551.12 : 105,688.22 = 40,906.65 : x
  2. Step 2: Convert to fraction form
    70,551.12/105,688.22 = 40,906.65/x
  3. Step 3: Cross multiply
    70,551.12x = 105,688.22 × 40,906.65
  4. Step 4: Simplify right side
    70,551.12x = 4,323,350,820.13
  5. Step 5: Solve for x
    x = 4,323,350,820.13/70,551.12
  6. Step 6: Final answer
    x = 61,279.69

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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.