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Finding the Fourth Proportional to 60,930.39, 91,361.63 and 18,798.51

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Solution

The fourth proportional to 60,930.39, 91,361.63 and 18,798.51 is: 28,187.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,930.39 : 91,361.63 = 18,798.51 : x
  2. Step 2: Convert to fraction form
    60,930.39/91,361.63 = 18,798.51/x
  3. Step 3: Cross multiply
    60,930.39x = 91,361.63 × 18,798.51
  4. Step 4: Simplify right side
    60,930.39x = 1,717,462,421.18
  5. Step 5: Solve for x
    x = 1,717,462,421.18/60,930.39
  6. Step 6: Final answer
    x = 28,187.29

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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.