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Finding the Fourth Proportional to 104,642.56, 156,875.36 and 45,433.44

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Solution

The fourth proportional to 104,642.56, 156,875.36 and 45,433.44 is: 68,111.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,642.56 : 156,875.36 = 45,433.44 : x
  2. Step 2: Convert to fraction form
    104,642.56/156,875.36 = 45,433.44/x
  3. Step 3: Cross multiply
    104,642.56x = 156,875.36 × 45,433.44
  4. Step 4: Simplify right side
    104,642.56x = 7,127,387,256.04
  5. Step 5: Solve for x
    x = 7,127,387,256.04/104,642.56
  6. Step 6: Final answer
    x = 68,111.74

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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.