Home / 87,768.90-131,430.60-48,281.40

Finding the Fourth Proportional to 87,768.90, 131,430.60 and 48,281.40

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Solution

The fourth proportional to 87,768.90, 131,430.60 and 48,281.40 is: 72,299.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,768.90 : 131,430.60 = 48,281.40 : x
  2. Step 2: Convert to fraction form
    87,768.90/131,430.60 = 48,281.40/x
  3. Step 3: Cross multiply
    87,768.90x = 131,430.60 × 48,281.40
  4. Step 4: Simplify right side
    87,768.90x = 6,345,653,370.84
  5. Step 5: Solve for x
    x = 6,345,653,370.84/87,768.90
  6. Step 6: Final answer
    x = 72,299.57

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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.