Home / 99,807.20-149,580.80-40,573.76

Finding the Fourth Proportional to 99,807.20, 149,580.80 and 40,573.76

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Solution

The fourth proportional to 99,807.20, 149,580.80 and 40,573.76 is: 60,807.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,807.20 : 149,580.80 = 40,573.76 : x
  2. Step 2: Convert to fraction form
    99,807.20/149,580.80 = 40,573.76/x
  3. Step 3: Cross multiply
    99,807.20x = 149,580.80 × 40,573.76
  4. Step 4: Simplify right side
    99,807.20x = 6,069,055,479.81
  5. Step 5: Solve for x
    x = 6,069,055,479.81/99,807.20
  6. Step 6: Final answer
    x = 60,807.79

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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.