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Finding the Fourth Proportional to 63,346.94, 87,421.11 and 40,990.94

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Solution

The fourth proportional to 63,346.94, 87,421.11 and 40,990.94 is: 56,569.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,346.94 : 87,421.11 = 40,990.94 : x
  2. Step 2: Convert to fraction form
    63,346.94/87,421.11 = 40,990.94/x
  3. Step 3: Cross multiply
    63,346.94x = 87,421.11 × 40,990.94
  4. Step 4: Simplify right side
    63,346.94x = 3,583,473,474.74
  5. Step 5: Solve for x
    x = 3,583,473,474.74/63,346.94
  6. Step 6: Final answer
    x = 56,569.01

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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.