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Finding the Fourth Proportional to 99,510.90, 149,266.02 and 40,346.46

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Solution

The fourth proportional to 99,510.90, 149,266.02 and 40,346.46 is: 60,519.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,510.90 : 149,266.02 = 40,346.46 : x
  2. Step 2: Convert to fraction form
    99,510.90/149,266.02 = 40,346.46/x
  3. Step 3: Cross multiply
    99,510.90x = 149,266.02 × 40,346.46
  4. Step 4: Simplify right side
    99,510.90x = 6,022,355,505.29
  5. Step 5: Solve for x
    x = 6,022,355,505.29/99,510.90
  6. Step 6: Final answer
    x = 60,519.56

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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.