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Finding the Fourth Proportional to 57,551.40, 86,332.86 and 20,606.76

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Solution

The fourth proportional to 57,551.40, 86,332.86 and 20,606.76 is: 30,912.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,551.40 : 86,332.86 = 20,606.76 : x
  2. Step 2: Convert to fraction form
    57,551.40/86,332.86 = 20,606.76/x
  3. Step 3: Cross multiply
    57,551.40x = 86,332.86 × 20,606.76
  4. Step 4: Simplify right side
    57,551.40x = 1,779,040,526.13
  5. Step 5: Solve for x
    x = 1,779,040,526.13/57,551.40
  6. Step 6: Final answer
    x = 30,912.20

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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.