Home / 85,827.80-128,778.15-41,431.70

Finding the Fourth Proportional to 85,827.80, 128,778.15 and 41,431.70

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Solution

The fourth proportional to 85,827.80, 128,778.15 and 41,431.70 is: 62,165.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,827.80 : 128,778.15 = 41,431.70 : x
  2. Step 2: Convert to fraction form
    85,827.80/128,778.15 = 41,431.70/x
  3. Step 3: Cross multiply
    85,827.80x = 128,778.15 × 41,431.70
  4. Step 4: Simplify right side
    85,827.80x = 5,335,497,677.36
  5. Step 5: Solve for x
    x = 5,335,497,677.36/85,827.80
  6. Step 6: Final answer
    x = 62,165.15

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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.