Home / 81,284.63-112,211.14-61,149.18

Finding the Fourth Proportional to 81,284.63, 112,211.14 and 61,149.18

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Solution

The fourth proportional to 81,284.63, 112,211.14 and 61,149.18 is: 84,414.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,284.63 : 112,211.14 = 61,149.18 : x
  2. Step 2: Convert to fraction form
    81,284.63/112,211.14 = 61,149.18/x
  3. Step 3: Cross multiply
    81,284.63x = 112,211.14 × 61,149.18
  4. Step 4: Simplify right side
    81,284.63x = 6,861,619,197.87
  5. Step 5: Solve for x
    x = 6,861,619,197.87/81,284.63
  6. Step 6: Final answer
    x = 84,414.72

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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.