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Finding the Fourth Proportional to 85,452.60, 128,191.05 and 26,293.08

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Solution

The fourth proportional to 85,452.60, 128,191.05 and 26,293.08 is: 39,443.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,452.60 : 128,191.05 = 26,293.08 : x
  2. Step 2: Convert to fraction form
    85,452.60/128,191.05 = 26,293.08/x
  3. Step 3: Cross multiply
    85,452.60x = 128,191.05 × 26,293.08
  4. Step 4: Simplify right side
    85,452.60x = 3,370,537,532.93
  5. Step 5: Solve for x
    x = 3,370,537,532.93/85,452.60
  6. Step 6: Final answer
    x = 39,443.36

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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.