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Finding the Fourth Proportional to 99,648.45, 149,472.45 and 40,470.24

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Solution

The fourth proportional to 99,648.45, 149,472.45 and 40,470.24 is: 60,705.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,648.45 : 149,472.45 = 40,470.24 : x
  2. Step 2: Convert to fraction form
    99,648.45/149,472.45 = 40,470.24/x
  3. Step 3: Cross multiply
    99,648.45x = 149,472.45 × 40,470.24
  4. Step 4: Simplify right side
    99,648.45x = 6,049,185,924.89
  5. Step 5: Solve for x
    x = 6,049,185,924.89/99,648.45
  6. Step 6: Final answer
    x = 60,705.27

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1.5x scale

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.