Home / 85,853.20-128,779.80-23,523.70

Finding the Fourth Proportional to 85,853.20, 128,779.80 and 23,523.70

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Solution

The fourth proportional to 85,853.20, 128,779.80 and 23,523.70 is: 35,285.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,853.20 : 128,779.80 = 23,523.70 : x
  2. Step 2: Convert to fraction form
    85,853.20/128,779.80 = 23,523.70/x
  3. Step 3: Cross multiply
    85,853.20x = 128,779.80 × 23,523.70
  4. Step 4: Simplify right side
    85,853.20x = 3,029,377,381.26
  5. Step 5: Solve for x
    x = 3,029,377,381.26/85,853.20
  6. Step 6: Final answer
    x = 35,285.55

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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.