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Finding the Fourth Proportional to 65,932.70, 90,987.20 and 35,718.08

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Solution

The fourth proportional to 65,932.70, 90,987.20 and 35,718.08 is: 49,290.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,932.70 : 90,987.20 = 35,718.08 : x
  2. Step 2: Convert to fraction form
    65,932.70/90,987.20 = 35,718.08/x
  3. Step 3: Cross multiply
    65,932.70x = 90,987.20 × 35,718.08
  4. Step 4: Simplify right side
    65,932.70x = 3,249,888,088.58
  5. Step 5: Solve for x
    x = 3,249,888,088.58/65,932.70
  6. Step 6: Final answer
    x = 49,290.99

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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.