Home / 83,678.32-115,492.44-51,861.36

Finding the Fourth Proportional to 83,678.32, 115,492.44 and 51,861.36

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Solution

The fourth proportional to 83,678.32, 115,492.44 and 51,861.36 is: 71,578.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,678.32 : 115,492.44 = 51,861.36 : x
  2. Step 2: Convert to fraction form
    83,678.32/115,492.44 = 51,861.36/x
  3. Step 3: Cross multiply
    83,678.32x = 115,492.44 × 51,861.36
  4. Step 4: Simplify right side
    83,678.32x = 5,989,595,008.12
  5. Step 5: Solve for x
    x = 5,989,595,008.12/83,678.32
  6. Step 6: Final answer
    x = 71,578.82

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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.