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Finding the Fourth Proportional to 65,690.79, 90,653.28 and 35,476.11

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Solution

The fourth proportional to 65,690.79, 90,653.28 and 35,476.11 is: 48,957.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,690.79 : 90,653.28 = 35,476.11 : x
  2. Step 2: Convert to fraction form
    65,690.79/90,653.28 = 35,476.11/x
  3. Step 3: Cross multiply
    65,690.79x = 90,653.28 × 35,476.11
  4. Step 4: Simplify right side
    65,690.79x = 3,216,025,799.66
  5. Step 5: Solve for x
    x = 3,216,025,799.66/65,690.79
  6. Step 6: Final answer
    x = 48,957.03

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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.