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Finding the Fourth Proportional to 99,697.74, 149,574.85 and 40,575.84

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Solution

The fourth proportional to 99,697.74, 149,574.85 and 40,575.84 is: 60,875.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,697.74 : 149,574.85 = 40,575.84 : x
  2. Step 2: Convert to fraction form
    99,697.74/149,574.85 = 40,575.84/x
  3. Step 3: Cross multiply
    99,697.74x = 149,574.85 × 40,575.84
  4. Step 4: Simplify right side
    99,697.74x = 6,069,125,181.62
  5. Step 5: Solve for x
    x = 6,069,125,181.62/99,697.74
  6. Step 6: Final answer
    x = 60,875.25

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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.