Home / 57,354.90-79,162.40-31,870.02

Finding the Fourth Proportional to 57,354.90, 79,162.40 and 31,870.02

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Solution

The fourth proportional to 57,354.90, 79,162.40 and 31,870.02 is: 43,987.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,354.90 : 79,162.40 = 31,870.02 : x
  2. Step 2: Convert to fraction form
    57,354.90/79,162.40 = 31,870.02/x
  3. Step 3: Cross multiply
    57,354.90x = 79,162.40 × 31,870.02
  4. Step 4: Simplify right side
    57,354.90x = 2,522,906,955.11
  5. Step 5: Solve for x
    x = 2,522,906,955.11/57,354.90
  6. Step 6: Final answer
    x = 43,987.65

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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.