Home / 76,407.92-105,357.68-49,515.12

Finding the Fourth Proportional to 76,407.92, 105,357.68 and 49,515.12

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Solution

The fourth proportional to 76,407.92, 105,357.68 and 49,515.12 is: 68,275.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,407.92 : 105,357.68 = 49,515.12 : x
  2. Step 2: Convert to fraction form
    76,407.92/105,357.68 = 49,515.12/x
  3. Step 3: Cross multiply
    76,407.92x = 105,357.68 × 49,515.12
  4. Step 4: Simplify right side
    76,407.92x = 5,216,798,168.12
  5. Step 5: Solve for x
    x = 5,216,798,168.12/76,407.92
  6. Step 6: Final answer
    x = 68,275.62

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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.