Home / 85,244.80-128,001.60-50,211.20

Finding the Fourth Proportional to 85,244.80, 128,001.60 and 50,211.20

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Solution

The fourth proportional to 85,244.80, 128,001.60 and 50,211.20 is: 75,395.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,244.80 : 128,001.60 = 50,211.20 : x
  2. Step 2: Convert to fraction form
    85,244.80/128,001.60 = 50,211.20/x
  3. Step 3: Cross multiply
    85,244.80x = 128,001.60 × 50,211.20
  4. Step 4: Simplify right side
    85,244.80x = 6,427,113,937.92
  5. Step 5: Solve for x
    x = 6,427,113,937.92/85,244.80
  6. Step 6: Final answer
    x = 75,395.96

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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.