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Finding the Fourth Proportional to 107,878.40, 161,788.80 and 32,998.40

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Solution

The fourth proportional to 107,878.40, 161,788.80 and 32,998.40 is: 49,488.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,878.40 : 161,788.80 = 32,998.40 : x
  2. Step 2: Convert to fraction form
    107,878.40/161,788.80 = 32,998.40/x
  3. Step 3: Cross multiply
    107,878.40x = 161,788.80 × 32,998.40
  4. Step 4: Simplify right side
    107,878.40x = 5,338,771,537.92
  5. Step 5: Solve for x
    x = 5,338,771,537.92/107,878.40
  6. Step 6: Final answer
    x = 49,488.79

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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.