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Finding the Fourth Proportional to 74,695.53, 112,076.39 and 39,148.39

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Solution

The fourth proportional to 74,695.53, 112,076.39 and 39,148.39 is: 58,739.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,695.53 : 112,076.39 = 39,148.39 : x
  2. Step 2: Convert to fraction form
    74,695.53/112,076.39 = 39,148.39/x
  3. Step 3: Cross multiply
    74,695.53x = 112,076.39 × 39,148.39
  4. Step 4: Simplify right side
    74,695.53x = 4,387,610,225.51
  5. Step 5: Solve for x
    x = 4,387,610,225.51/74,695.53
  6. Step 6: Final answer
    x = 58,739.93

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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.