Home / 85,418.90-128,115.15-29,246.10

Finding the Fourth Proportional to 85,418.90, 128,115.15 and 29,246.10

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Solution

The fourth proportional to 85,418.90, 128,115.15 and 29,246.10 is: 43,864.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,418.90 : 128,115.15 = 29,246.10 : x
  2. Step 2: Convert to fraction form
    85,418.90/128,115.15 = 29,246.10/x
  3. Step 3: Cross multiply
    85,418.90x = 128,115.15 × 29,246.10
  4. Step 4: Simplify right side
    85,418.90x = 3,746,868,488.42
  5. Step 5: Solve for x
    x = 3,746,868,488.42/85,418.90
  6. Step 6: Final answer
    x = 43,864.63

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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.