Home / 52,299.54-78,480.16-20,712.65

Finding the Fourth Proportional to 52,299.54, 78,480.16 and 20,712.65

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Solution

The fourth proportional to 52,299.54, 78,480.16 and 20,712.65 is: 31,081.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,299.54 : 78,480.16 = 20,712.65 : x
  2. Step 2: Convert to fraction form
    52,299.54/78,480.16 = 20,712.65/x
  3. Step 3: Cross multiply
    52,299.54x = 78,480.16 × 20,712.65
  4. Step 4: Simplify right side
    52,299.54x = 1,625,531,641.84
  5. Step 5: Solve for x
    x = 1,625,531,641.84/52,299.54
  6. Step 6: Final answer
    x = 31,081.18

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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.