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Finding the Fourth Proportional to 91,583.58, 137,395.02 and 28,402.34

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Solution

The fourth proportional to 91,583.58, 137,395.02 and 28,402.34 is: 42,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,583.58 : 137,395.02 = 28,402.34 : x
  2. Step 2: Convert to fraction form
    91,583.58/137,395.02 = 28,402.34/x
  3. Step 3: Cross multiply
    91,583.58x = 137,395.02 × 28,402.34
  4. Step 4: Simplify right side
    91,583.58x = 3,902,340,072.35
  5. Step 5: Solve for x
    x = 3,902,340,072.35/91,583.58
  6. Step 6: Final answer
    x = 42,609.60

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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.