Home / 52,549.40-78,833.70-21,387.80

Finding the Fourth Proportional to 52,549.40, 78,833.70 and 21,387.80

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Solution

The fourth proportional to 52,549.40, 78,833.70 and 21,387.80 is: 32,085.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,549.40 : 78,833.70 = 21,387.80 : x
  2. Step 2: Convert to fraction form
    52,549.40/78,833.70 = 21,387.80/x
  3. Step 3: Cross multiply
    52,549.40x = 78,833.70 × 21,387.80
  4. Step 4: Simplify right side
    52,549.40x = 1,686,079,408.86
  5. Step 5: Solve for x
    x = 1,686,079,408.86/52,549.40
  6. Step 6: Final answer
    x = 32,085.61

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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.