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Finding the Fourth Proportional to 40,860.72, 61,283.72 and 11,271.22

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Solution

The fourth proportional to 40,860.72, 61,283.72 and 11,271.22 is: 16,904.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,860.72 : 61,283.72 = 11,271.22 : x
  2. Step 2: Convert to fraction form
    40,860.72/61,283.72 = 11,271.22/x
  3. Step 3: Cross multiply
    40,860.72x = 61,283.72 × 11,271.22
  4. Step 4: Simplify right side
    40,860.72x = 690,742,165.51
  5. Step 5: Solve for x
    x = 690,742,165.51/40,860.72
  6. Step 6: Final answer
    x = 16,904.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.