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Finding the Fourth Proportional to 101,795.40, 140,330.16 and 71,488.44

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Solution

The fourth proportional to 101,795.40, 140,330.16 and 71,488.44 is: 98,550.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,795.40 : 140,330.16 = 71,488.44 : x
  2. Step 2: Convert to fraction form
    101,795.40/140,330.16 = 71,488.44/x
  3. Step 3: Cross multiply
    101,795.40x = 140,330.16 × 71,488.44
  4. Step 4: Simplify right side
    101,795.40x = 10,031,984,223.35
  5. Step 5: Solve for x
    x = 10,031,984,223.35/101,795.40
  6. Step 6: Final answer
    x = 98,550.47

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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.