Home / 57,154.79-78,873.54-31,661.15

Finding the Fourth Proportional to 57,154.79, 78,873.54 and 31,661.15

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Solution

The fourth proportional to 57,154.79, 78,873.54 and 31,661.15 is: 43,692.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,154.79 : 78,873.54 = 31,661.15 : x
  2. Step 2: Convert to fraction form
    57,154.79/78,873.54 = 31,661.15/x
  3. Step 3: Cross multiply
    57,154.79x = 78,873.54 × 31,661.15
  4. Step 4: Simplify right side
    57,154.79x = 2,497,226,980.97
  5. Step 5: Solve for x
    x = 2,497,226,980.97/57,154.79
  6. Step 6: Final answer
    x = 43,692.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.