Home / 57,981.40-86,970.73-18,538.86

Finding the Fourth Proportional to 57,981.40, 86,970.73 and 18,538.86

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Solution

The fourth proportional to 57,981.40, 86,970.73 and 18,538.86 is: 27,807.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,981.40 : 86,970.73 = 18,538.86 : x
  2. Step 2: Convert to fraction form
    57,981.40/86,970.73 = 18,538.86/x
  3. Step 3: Cross multiply
    57,981.40x = 86,970.73 × 18,538.86
  4. Step 4: Simplify right side
    57,981.40x = 1,612,338,187.57
  5. Step 5: Solve for x
    x = 1,612,338,187.57/57,981.40
  6. Step 6: Final answer
    x = 27,807.85

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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.