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Finding the Fourth Proportional to 100,560.48, 138,773.04 and 55,848.48

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Solution

The fourth proportional to 100,560.48, 138,773.04 and 55,848.48 is: 77,070.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,560.48 : 138,773.04 = 55,848.48 : x
  2. Step 2: Convert to fraction form
    100,560.48/138,773.04 = 55,848.48/x
  3. Step 3: Cross multiply
    100,560.48x = 138,773.04 × 55,848.48
  4. Step 4: Simplify right side
    100,560.48x = 7,750,263,348.98
  5. Step 5: Solve for x
    x = 7,750,263,348.98/100,560.48
  6. Step 6: Final answer
    x = 77,070.67

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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.