Home / 52,514.16-78,776.14-20,916.60

Finding the Fourth Proportional to 52,514.16, 78,776.14 and 20,916.60

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Solution

The fourth proportional to 52,514.16, 78,776.14 and 20,916.60 is: 31,376.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,514.16 : 78,776.14 = 20,916.60 : x
  2. Step 2: Convert to fraction form
    52,514.16/78,776.14 = 20,916.60/x
  3. Step 3: Cross multiply
    52,514.16x = 78,776.14 × 20,916.60
  4. Step 4: Simplify right side
    52,514.16x = 1,647,729,009.92
  5. Step 5: Solve for x
    x = 1,647,729,009.92/52,514.16
  6. Step 6: Final answer
    x = 31,376.85

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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.