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Finding the Fourth Proportional to 71,960.65, 99,303.51 and 40,134.94

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Solution

The fourth proportional to 71,960.65, 99,303.51 and 40,134.94 is: 55,385.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,960.65 : 99,303.51 = 40,134.94 : x
  2. Step 2: Convert to fraction form
    71,960.65/99,303.51 = 40,134.94/x
  3. Step 3: Cross multiply
    71,960.65x = 99,303.51 × 40,134.94
  4. Step 4: Simplify right side
    71,960.65x = 3,985,540,415.64
  5. Step 5: Solve for x
    x = 3,985,540,415.64/71,960.65
  6. Step 6: Final answer
    x = 55,385.00

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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.