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Finding the Fourth Proportional to 63,617.79, 87,752.84 and 40,986.75

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Solution

The fourth proportional to 63,617.79, 87,752.84 and 40,986.75 is: 56,536.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,617.79 : 87,752.84 = 40,986.75 : x
  2. Step 2: Convert to fraction form
    63,617.79/87,752.84 = 40,986.75/x
  3. Step 3: Cross multiply
    63,617.79x = 87,752.84 × 40,986.75
  4. Step 4: Simplify right side
    63,617.79x = 3,596,703,509.94
  5. Step 5: Solve for x
    x = 3,596,703,509.94/63,617.79
  6. Step 6: Final answer
    x = 56,536.13

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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.