Home / 83,638.45-115,420.57-45,398.76

Finding the Fourth Proportional to 83,638.45, 115,420.57 and 45,398.76

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Solution

The fourth proportional to 83,638.45, 115,420.57 and 45,398.76 is: 62,650.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,638.45 : 115,420.57 = 45,398.76 : x
  2. Step 2: Convert to fraction form
    83,638.45/115,420.57 = 45,398.76/x
  3. Step 3: Cross multiply
    83,638.45x = 115,420.57 × 45,398.76
  4. Step 4: Simplify right side
    83,638.45x = 5,239,950,756.49
  5. Step 5: Solve for x
    x = 5,239,950,756.49/83,638.45
  6. Step 6: Final answer
    x = 62,650.02

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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.