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Finding the Fourth Proportional to 85,018.69, 127,470.39 and 47,604.52

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Solution

The fourth proportional to 85,018.69, 127,470.39 and 47,604.52 is: 71,374.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,018.69 : 127,470.39 = 47,604.52 : x
  2. Step 2: Convert to fraction form
    85,018.69/127,470.39 = 47,604.52/x
  3. Step 3: Cross multiply
    85,018.69x = 127,470.39 × 47,604.52
  4. Step 4: Simplify right side
    85,018.69x = 6,068,166,730.16
  5. Step 5: Solve for x
    x = 6,068,166,730.16/85,018.69
  6. Step 6: Final answer
    x = 71,374.50

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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.