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Finding the Fourth Proportional to 76,876.70, 106,087.27 and 45,044.91

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Solution

The fourth proportional to 76,876.70, 106,087.27 and 45,044.91 is: 62,160.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,876.70 : 106,087.27 = 45,044.91 : x
  2. Step 2: Convert to fraction form
    76,876.70/106,087.27 = 45,044.91/x
  3. Step 3: Cross multiply
    76,876.70x = 106,087.27 × 45,044.91
  4. Step 4: Simplify right side
    76,876.70x = 4,778,691,501.14
  5. Step 5: Solve for x
    x = 4,778,691,501.14/76,876.70
  6. Step 6: Final answer
    x = 62,160.47

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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.