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Finding the Fourth Proportional to 65,693.79, 90,657.42 and 35,479.11

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Solution

The fourth proportional to 65,693.79, 90,657.42 and 35,479.11 is: 48,961.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,693.79 : 90,657.42 = 35,479.11 : x
  2. Step 2: Convert to fraction form
    65,693.79/90,657.42 = 35,479.11/x
  3. Step 3: Cross multiply
    65,693.79x = 90,657.42 × 35,479.11
  4. Step 4: Simplify right side
    65,693.79x = 3,216,444,576.50
  5. Step 5: Solve for x
    x = 3,216,444,576.50/65,693.79
  6. Step 6: Final answer
    x = 48,961.17

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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.