Home / 76,946.49-115,428.92-72,747.45

Finding the Fourth Proportional to 76,946.49, 115,428.92 and 72,747.45

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Solution

The fourth proportional to 76,946.49, 115,428.92 and 72,747.45 is: 109,129.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,946.49 : 115,428.92 = 72,747.45 : x
  2. Step 2: Convert to fraction form
    76,946.49/115,428.92 = 72,747.45/x
  3. Step 3: Cross multiply
    76,946.49x = 115,428.92 × 72,747.45
  4. Step 4: Simplify right side
    76,946.49x = 8,397,159,222.52
  5. Step 5: Solve for x
    x = 8,397,159,222.52/76,946.49
  6. Step 6: Final answer
    x = 109,129.85

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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.