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Finding the Fourth Proportional to 40,386.42, 60,583.59 and 15,447.42

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Solution

The fourth proportional to 40,386.42, 60,583.59 and 15,447.42 is: 23,172.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,386.42 : 60,583.59 = 15,447.42 : x
  2. Step 2: Convert to fraction form
    40,386.42/60,583.59 = 15,447.42/x
  3. Step 3: Cross multiply
    40,386.42x = 60,583.59 × 15,447.42
  4. Step 4: Simplify right side
    40,386.42x = 935,860,159.84
  5. Step 5: Solve for x
    x = 935,860,159.84/40,386.42
  6. Step 6: Final answer
    x = 23,172.64

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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.