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Finding the Fourth Proportional to 69,071.60, 103,530.60 and 37,929.20

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Solution

The fourth proportional to 69,071.60, 103,530.60 and 37,929.20 is: 56,851.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,071.60 : 103,530.60 = 37,929.20 : x
  2. Step 2: Convert to fraction form
    69,071.60/103,530.60 = 37,929.20/x
  3. Step 3: Cross multiply
    69,071.60x = 103,530.60 × 37,929.20
  4. Step 4: Simplify right side
    69,071.60x = 3,926,832,833.52
  5. Step 5: Solve for x
    x = 3,926,832,833.52/69,071.60
  6. Step 6: Final answer
    x = 56,851.63

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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.