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Finding the Fourth Proportional to 70,187.80, 105,298.98 and 49,451.80

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Solution

The fourth proportional to 70,187.80, 105,298.98 and 49,451.80 is: 74,189.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,187.80 : 105,298.98 = 49,451.80 : x
  2. Step 2: Convert to fraction form
    70,187.80/105,298.98 = 49,451.80/x
  3. Step 3: Cross multiply
    70,187.80x = 105,298.98 × 49,451.80
  4. Step 4: Simplify right side
    70,187.80x = 5,207,224,099.16
  5. Step 5: Solve for x
    x = 5,207,224,099.16/70,187.80
  6. Step 6: Final answer
    x = 74,189.87

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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.