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Finding the Fourth Proportional to 112,065.58, 168,112.95 and 40,977.15

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Solution

The fourth proportional to 112,065.58, 168,112.95 and 40,977.15 is: 61,471.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,065.58 : 168,112.95 = 40,977.15 : x
  2. Step 2: Convert to fraction form
    112,065.58/168,112.95 = 40,977.15/x
  3. Step 3: Cross multiply
    112,065.58x = 168,112.95 × 40,977.15
  4. Step 4: Simplify right side
    112,065.58x = 6,888,788,523.64
  5. Step 5: Solve for x
    x = 6,888,788,523.64/112,065.58
  6. Step 6: Final answer
    x = 61,471.05

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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.