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Finding the Fourth Proportional to 104,572.53, 156,842.39 and 45,392.31

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Solution

The fourth proportional to 104,572.53, 156,842.39 and 45,392.31 is: 68,081.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,572.53 : 156,842.39 = 45,392.31 : x
  2. Step 2: Convert to fraction form
    104,572.53/156,842.39 = 45,392.31/x
  3. Step 3: Cross multiply
    104,572.53x = 156,842.39 × 45,392.31
  4. Step 4: Simplify right side
    104,572.53x = 7,119,438,501.50
  5. Step 5: Solve for x
    x = 7,119,438,501.50/104,572.53
  6. Step 6: Final answer
    x = 68,081.35

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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.