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Finding the Fourth Proportional to 81,246.69, 112,124.79 and 45,434.57

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Solution

The fourth proportional to 81,246.69, 112,124.79 and 45,434.57 is: 62,702.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,246.69 : 112,124.79 = 45,434.57 : x
  2. Step 2: Convert to fraction form
    81,246.69/112,124.79 = 45,434.57/x
  3. Step 3: Cross multiply
    81,246.69x = 112,124.79 × 45,434.57
  4. Step 4: Simplify right side
    81,246.69x = 5,094,341,059.37
  5. Step 5: Solve for x
    x = 5,094,341,059.37/81,246.69
  6. Step 6: Final answer
    x = 62,702.14

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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.