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Finding the Fourth Proportional to 87,779.40, 131,725.80 and 48,364.80

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Solution

The fourth proportional to 87,779.40, 131,725.80 and 48,364.80 is: 72,578.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,779.40 : 131,725.80 = 48,364.80 : x
  2. Step 2: Convert to fraction form
    87,779.40/131,725.80 = 48,364.80/x
  3. Step 3: Cross multiply
    87,779.40x = 131,725.80 × 48,364.80
  4. Step 4: Simplify right side
    87,779.40x = 6,370,891,971.84
  5. Step 5: Solve for x
    x = 6,370,891,971.84/87,779.40
  6. Step 6: Final answer
    x = 72,578.44

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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.