Home / 90,010.14-124,221.42-51,782.10

Finding the Fourth Proportional to 90,010.14, 124,221.42 and 51,782.10

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Solution

The fourth proportional to 90,010.14, 124,221.42 and 51,782.10 is: 71,463.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,010.14 : 124,221.42 = 51,782.10 : x
  2. Step 2: Convert to fraction form
    90,010.14/124,221.42 = 51,782.10/x
  3. Step 3: Cross multiply
    90,010.14x = 124,221.42 × 51,782.10
  4. Step 4: Simplify right side
    90,010.14x = 6,432,445,992.58
  5. Step 5: Solve for x
    x = 6,432,445,992.58/90,010.14
  6. Step 6: Final answer
    x = 71,463.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.