Home / 66,106.63-91,182.04-42,222.61

Finding the Fourth Proportional to 66,106.63, 91,182.04 and 42,222.61

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Solution

The fourth proportional to 66,106.63, 91,182.04 and 42,222.61 is: 58,238.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,106.63 : 91,182.04 = 42,222.61 : x
  2. Step 2: Convert to fraction form
    66,106.63/91,182.04 = 42,222.61/x
  3. Step 3: Cross multiply
    66,106.63x = 91,182.04 × 42,222.61
  4. Step 4: Simplify right side
    66,106.63x = 3,849,943,713.92
  5. Step 5: Solve for x
    x = 3,849,943,713.92/66,106.63
  6. Step 6: Final answer
    x = 58,238.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.