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Finding the Fourth Proportional to 83,690.64, 115,492.56 and 50,156.64

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Solution

The fourth proportional to 83,690.64, 115,492.56 and 50,156.64 is: 69,215.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,690.64 : 115,492.56 = 50,156.64 : x
  2. Step 2: Convert to fraction form
    83,690.64/115,492.56 = 50,156.64/x
  3. Step 3: Cross multiply
    83,690.64x = 115,492.56 × 50,156.64
  4. Step 4: Simplify right side
    83,690.64x = 5,792,718,754.60
  5. Step 5: Solve for x
    x = 5,792,718,754.60/83,690.64
  6. Step 6: Final answer
    x = 69,215.85

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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.