Home / 52,640.12-72,609.42-31,403

Finding the Fourth Proportional to 52,640.12, 72,609.42 and 31,403

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Solution

The fourth proportional to 52,640.12, 72,609.42 and 31,403 is: 43,315.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,640.12 : 72,609.42 = 31,403 : x
  2. Step 2: Convert to fraction form
    52,640.12/72,609.42 = 31,403/x
  3. Step 3: Cross multiply
    52,640.12x = 72,609.42 × 31,403
  4. Step 4: Simplify right side
    52,640.12x = 2,280,153,616.26
  5. Step 5: Solve for x
    x = 2,280,153,616.26/52,640.12
  6. Step 6: Final answer
    x = 43,315.89

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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.