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Finding the Fourth Proportional to 60,251.66, 90,376.12 and 20,805.06

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Solution

The fourth proportional to 60,251.66, 90,376.12 and 20,805.06 is: 31,207.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,251.66 : 90,376.12 = 20,805.06 : x
  2. Step 2: Convert to fraction form
    60,251.66/90,376.12 = 20,805.06/x
  3. Step 3: Cross multiply
    60,251.66x = 90,376.12 × 20,805.06
  4. Step 4: Simplify right side
    60,251.66x = 1,880,280,599.17
  5. Step 5: Solve for x
    x = 1,880,280,599.17/60,251.66
  6. Step 6: Final answer
    x = 31,207.12

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1.5x scale

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.