Home / 76,454.92-105,507.06-42,920.68

Finding the Fourth Proportional to 76,454.92, 105,507.06 and 42,920.68

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Solution

The fourth proportional to 76,454.92, 105,507.06 and 42,920.68 is: 59,230.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,454.92 : 105,507.06 = 42,920.68 : x
  2. Step 2: Convert to fraction form
    76,454.92/105,507.06 = 42,920.68/x
  3. Step 3: Cross multiply
    76,454.92x = 105,507.06 × 42,920.68
  4. Step 4: Simplify right side
    76,454.92x = 4,528,434,760.00
  5. Step 5: Solve for x
    x = 4,528,434,760.00/76,454.92
  6. Step 6: Final answer
    x = 59,230.13

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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.