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Finding the Fourth Proportional to 40,307.71, 60,461.72 and 12,228.01

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Solution

The fourth proportional to 40,307.71, 60,461.72 and 12,228.01 is: 18,342.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,307.71 : 60,461.72 = 12,228.01 : x
  2. Step 2: Convert to fraction form
    40,307.71/60,461.72 = 12,228.01/x
  3. Step 3: Cross multiply
    40,307.71x = 60,461.72 × 12,228.01
  4. Step 4: Simplify right side
    40,307.71x = 739,326,516.78
  5. Step 5: Solve for x
    x = 739,326,516.78/40,307.71
  6. Step 6: Final answer
    x = 18,342.06

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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.