Home / 57,121.04-78,829.50-31,627.40

Finding the Fourth Proportional to 57,121.04, 78,829.50 and 31,627.40

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Solution

The fourth proportional to 57,121.04, 78,829.50 and 31,627.40 is: 43,647.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,121.04 : 78,829.50 = 31,627.40 : x
  2. Step 2: Convert to fraction form
    57,121.04/78,829.50 = 31,627.40/x
  3. Step 3: Cross multiply
    57,121.04x = 78,829.50 × 31,627.40
  4. Step 4: Simplify right side
    57,121.04x = 2,493,172,128.30
  5. Step 5: Solve for x
    x = 2,493,172,128.30/57,121.04
  6. Step 6: Final answer
    x = 43,647.18

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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.