Home / 85,512.60-128,281.05-26,342.10

Finding the Fourth Proportional to 85,512.60, 128,281.05 and 26,342.10

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Solution

The fourth proportional to 85,512.60, 128,281.05 and 26,342.10 is: 39,516.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,512.60 : 128,281.05 = 26,342.10 : x
  2. Step 2: Convert to fraction form
    85,512.60/128,281.05 = 26,342.10/x
  3. Step 3: Cross multiply
    85,512.60x = 128,281.05 × 26,342.10
  4. Step 4: Simplify right side
    85,512.60x = 3,379,192,247.21
  5. Step 5: Solve for x
    x = 3,379,192,247.21/85,512.60
  6. Step 6: Final answer
    x = 39,516.89

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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.