Home / 81,328.88-112,208.28-45,513.20

Finding the Fourth Proportional to 81,328.88, 112,208.28 and 45,513.20

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Solution

The fourth proportional to 81,328.88, 112,208.28 and 45,513.20 is: 62,793.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,328.88 : 112,208.28 = 45,513.20 : x
  2. Step 2: Convert to fraction form
    81,328.88/112,208.28 = 45,513.20/x
  3. Step 3: Cross multiply
    81,328.88x = 112,208.28 × 45,513.20
  4. Step 4: Simplify right side
    81,328.88x = 5,106,957,889.30
  5. Step 5: Solve for x
    x = 5,106,957,889.30/81,328.88
  6. Step 6: Final answer
    x = 62,793.90

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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.