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Finding the Fourth Proportional to 63,017.91, 86,935.68 and 40,346.01

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Solution

The fourth proportional to 63,017.91, 86,935.68 and 40,346.01 is: 55,658.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,017.91 : 86,935.68 = 40,346.01 : x
  2. Step 2: Convert to fraction form
    63,017.91/86,935.68 = 40,346.01/x
  3. Step 3: Cross multiply
    63,017.91x = 86,935.68 × 40,346.01
  4. Step 4: Simplify right side
    63,017.91x = 3,507,507,814.64
  5. Step 5: Solve for x
    x = 3,507,507,814.64/63,017.91
  6. Step 6: Final answer
    x = 55,658.90

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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.