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Finding the Fourth Proportional to 65,232.70, 90,019.60 and 38,376.94

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Solution

The fourth proportional to 65,232.70, 90,019.60 and 38,376.94 is: 52,959.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,232.70 : 90,019.60 = 38,376.94 : x
  2. Step 2: Convert to fraction form
    65,232.70/90,019.60 = 38,376.94/x
  3. Step 3: Cross multiply
    65,232.70x = 90,019.60 × 38,376.94
  4. Step 4: Simplify right side
    65,232.70x = 3,454,676,788.02
  5. Step 5: Solve for x
    x = 3,454,676,788.02/65,232.70
  6. Step 6: Final answer
    x = 52,959.28

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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.