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Finding the Fourth Proportional to 74,942.47, 111,866.99 and 65,483.88

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Solution

The fourth proportional to 74,942.47, 111,866.99 and 65,483.88 is: 97,748.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,942.47 : 111,866.99 = 65,483.88 : x
  2. Step 2: Convert to fraction form
    74,942.47/111,866.99 = 65,483.88/x
  3. Step 3: Cross multiply
    74,942.47x = 111,866.99 × 65,483.88
  4. Step 4: Simplify right side
    74,942.47x = 7,325,484,549.12
  5. Step 5: Solve for x
    x = 7,325,484,549.12/74,942.47
  6. Step 6: Final answer
    x = 97,748.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.