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Finding the Fourth Proportional to 65,471.70, 90,358.29 and 37,182.18

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Solution

The fourth proportional to 65,471.70, 90,358.29 and 37,182.18 is: 51,315.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,471.70 : 90,358.29 = 37,182.18 : x
  2. Step 2: Convert to fraction form
    65,471.70/90,358.29 = 37,182.18/x
  3. Step 3: Cross multiply
    65,471.70x = 90,358.29 × 37,182.18
  4. Step 4: Simplify right side
    65,471.70x = 3,359,718,203.27
  5. Step 5: Solve for x
    x = 3,359,718,203.27/65,471.70
  6. Step 6: Final answer
    x = 51,315.58

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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.