Home / 81,126.12-112,063.62-61,134.12

Finding the Fourth Proportional to 81,126.12, 112,063.62 and 61,134.12

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Solution

The fourth proportional to 81,126.12, 112,063.62 and 61,134.12 is: 84,447.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,126.12 : 112,063.62 = 61,134.12 : x
  2. Step 2: Convert to fraction form
    81,126.12/112,063.62 = 61,134.12/x
  3. Step 3: Cross multiply
    81,126.12x = 112,063.62 × 61,134.12
  4. Step 4: Simplify right side
    81,126.12x = 6,850,910,792.71
  5. Step 5: Solve for x
    x = 6,850,910,792.71/81,126.12
  6. Step 6: Final answer
    x = 84,447.66

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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.