Home / 90,778.60-136,126.30-48,652.20

Finding the Fourth Proportional to 90,778.60, 136,126.30 and 48,652.20

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Solution

The fourth proportional to 90,778.60, 136,126.30 and 48,652.20 is: 72,956.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,778.60 : 136,126.30 = 48,652.20 : x
  2. Step 2: Convert to fraction form
    90,778.60/136,126.30 = 48,652.20/x
  3. Step 3: Cross multiply
    90,778.60x = 136,126.30 × 48,652.20
  4. Step 4: Simplify right side
    90,778.60x = 6,622,843,972.86
  5. Step 5: Solve for x
    x = 6,622,843,972.86/90,778.60
  6. Step 6: Final answer
    x = 72,956.00

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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.