Home / 53,920.18-74,408.68-31,263.20

Finding the Fourth Proportional to 53,920.18, 74,408.68 and 31,263.20

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Solution

The fourth proportional to 53,920.18, 74,408.68 and 31,263.20 is: 43,142.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,920.18 : 74,408.68 = 31,263.20 : x
  2. Step 2: Convert to fraction form
    53,920.18/74,408.68 = 31,263.20/x
  3. Step 3: Cross multiply
    53,920.18x = 74,408.68 × 31,263.20
  4. Step 4: Simplify right side
    53,920.18x = 2,326,253,214.79
  5. Step 5: Solve for x
    x = 2,326,253,214.79/53,920.18
  6. Step 6: Final answer
    x = 43,142.53

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1.5x scale

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.