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Finding the Fourth Proportional to 69,365.76, 103,844.52 and 42,985.68

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Solution

The fourth proportional to 69,365.76, 103,844.52 and 42,985.68 is: 64,352.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,365.76 : 103,844.52 = 42,985.68 : x
  2. Step 2: Convert to fraction form
    69,365.76/103,844.52 = 42,985.68/x
  3. Step 3: Cross multiply
    69,365.76x = 103,844.52 × 42,985.68
  4. Step 4: Simplify right side
    69,365.76x = 4,463,827,306.47
  5. Step 5: Solve for x
    x = 4,463,827,306.47/69,365.76
  6. Step 6: Final answer
    x = 64,352.03

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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.