Home / 92,938.12-139,418.70-30,630.28

Finding the Fourth Proportional to 92,938.12, 139,418.70 and 30,630.28

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Solution

The fourth proportional to 92,938.12, 139,418.70 and 30,630.28 is: 45,949.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,938.12 : 139,418.70 = 30,630.28 : x
  2. Step 2: Convert to fraction form
    92,938.12/139,418.70 = 30,630.28/x
  3. Step 3: Cross multiply
    92,938.12x = 139,418.70 × 30,630.28
  4. Step 4: Simplify right side
    92,938.12x = 4,270,433,818.24
  5. Step 5: Solve for x
    x = 4,270,433,818.24/92,938.12
  6. Step 6: Final answer
    x = 45,949.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.