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Finding the Fourth Proportional to 65,490.19, 90,376.46 and 35,682.19

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Solution

The fourth proportional to 65,490.19, 90,376.46 and 35,682.19 is: 49,241.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,490.19 : 90,376.46 = 35,682.19 : x
  2. Step 2: Convert to fraction form
    65,490.19/90,376.46 = 35,682.19/x
  3. Step 3: Cross multiply
    65,490.19x = 90,376.46 × 35,682.19
  4. Step 4: Simplify right side
    65,490.19x = 3,224,829,746.70
  5. Step 5: Solve for x
    x = 3,224,829,746.70/65,490.19
  6. Step 6: Final answer
    x = 49,241.42

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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.