Home / 76,678.16-115,040.76-39,264.52

Finding the Fourth Proportional to 76,678.16, 115,040.76 and 39,264.52

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Solution

The fourth proportional to 76,678.16, 115,040.76 and 39,264.52 is: 58,908.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,678.16 : 115,040.76 = 39,264.52 : x
  2. Step 2: Convert to fraction form
    76,678.16/115,040.76 = 39,264.52/x
  3. Step 3: Cross multiply
    76,678.16x = 115,040.76 × 39,264.52
  4. Step 4: Simplify right side
    76,678.16x = 4,517,020,221.84
  5. Step 5: Solve for x
    x = 4,517,020,221.84/76,678.16
  6. Step 6: Final answer
    x = 58,908.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.