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Finding the Fourth Proportional to 86,572.40, 129,858.60 and 57,023.60

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Solution

The fourth proportional to 86,572.40, 129,858.60 and 57,023.60 is: 85,535.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,572.40 : 129,858.60 = 57,023.60 : x
  2. Step 2: Convert to fraction form
    86,572.40/129,858.60 = 57,023.60/x
  3. Step 3: Cross multiply
    86,572.40x = 129,858.60 × 57,023.60
  4. Step 4: Simplify right side
    86,572.40x = 7,405,004,862.96
  5. Step 5: Solve for x
    x = 7,405,004,862.96/86,572.40
  6. Step 6: Final answer
    x = 85,535.40

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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.