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Finding the Fourth Proportional to 60,666.70, 90,963.60 and 31,142.20

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Solution

The fourth proportional to 60,666.70, 90,963.60 and 31,142.20 is: 46,694.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,666.70 : 90,963.60 = 31,142.20 : x
  2. Step 2: Convert to fraction form
    60,666.70/90,963.60 = 31,142.20/x
  3. Step 3: Cross multiply
    60,666.70x = 90,963.60 × 31,142.20
  4. Step 4: Simplify right side
    60,666.70x = 2,832,806,623.92
  5. Step 5: Solve for x
    x = 2,832,806,623.92/60,666.70
  6. Step 6: Final answer
    x = 46,694.59

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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.