Home / 57,708.23-86,551.40-20,259.50

Finding the Fourth Proportional to 57,708.23, 86,551.40 and 20,259.50

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Solution

The fourth proportional to 57,708.23, 86,551.40 and 20,259.50 is: 30,385.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,708.23 : 86,551.40 = 20,259.50 : x
  2. Step 2: Convert to fraction form
    57,708.23/86,551.40 = 20,259.50/x
  3. Step 3: Cross multiply
    57,708.23x = 86,551.40 × 20,259.50
  4. Step 4: Simplify right side
    57,708.23x = 1,753,487,706.19
  5. Step 5: Solve for x
    x = 1,753,487,706.19/57,708.23
  6. Step 6: Final answer
    x = 30,385.40

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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.