Home / 76,332.25-105,338.55-42,339.61

Finding the Fourth Proportional to 76,332.25, 105,338.55 and 42,339.61

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Solution

The fourth proportional to 76,332.25, 105,338.55 and 42,339.61 is: 58,428.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,332.25 : 105,338.55 = 42,339.61 : x
  2. Step 2: Convert to fraction form
    76,332.25/105,338.55 = 42,339.61/x
  3. Step 3: Cross multiply
    76,332.25x = 105,338.55 × 42,339.61
  4. Step 4: Simplify right side
    76,332.25x = 4,459,993,124.97
  5. Step 5: Solve for x
    x = 4,459,993,124.97/76,332.25
  6. Step 6: Final answer
    x = 58,428.69

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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.