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Finding the Fourth Proportional to 61,070.84, 91,619.31 and 18,950

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Solution

The fourth proportional to 61,070.84, 91,619.31 and 18,950 is: 28,429.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,070.84 : 91,619.31 = 18,950 : x
  2. Step 2: Convert to fraction form
    61,070.84/91,619.31 = 18,950/x
  3. Step 3: Cross multiply
    61,070.84x = 91,619.31 × 18,950
  4. Step 4: Simplify right side
    61,070.84x = 1,736,185,924.50
  5. Step 5: Solve for x
    x = 1,736,185,924.50/61,070.84
  6. Step 6: Final answer
    x = 28,429.05

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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.