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Finding the Fourth Proportional to 65,518.88, 90,418.56 and 35,710.88

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Solution

The fourth proportional to 65,518.88, 90,418.56 and 35,710.88 is: 49,282.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,518.88 : 90,418.56 = 35,710.88 : x
  2. Step 2: Convert to fraction form
    65,518.88/90,418.56 = 35,710.88/x
  3. Step 3: Cross multiply
    65,518.88x = 90,418.56 × 35,710.88
  4. Step 4: Simplify right side
    65,518.88x = 3,228,926,345.93
  5. Step 5: Solve for x
    x = 3,228,926,345.93/65,518.88
  6. Step 6: Final answer
    x = 49,282.38

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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.