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Finding the Fourth Proportional to 65,886.25, 90,923.76 and 35,672.20

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Solution

The fourth proportional to 65,886.25, 90,923.76 and 35,672.20 is: 49,228.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,886.25 : 90,923.76 = 35,672.20 : x
  2. Step 2: Convert to fraction form
    65,886.25/90,923.76 = 35,672.20/x
  3. Step 3: Cross multiply
    65,886.25x = 90,923.76 × 35,672.20
  4. Step 4: Simplify right side
    65,886.25x = 3,243,450,665.13
  5. Step 5: Solve for x
    x = 3,243,450,665.13/65,886.25
  6. Step 6: Final answer
    x = 49,228.04

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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.