Home / 105,636.66-145,778.59-57,891.11

Finding the Fourth Proportional to 105,636.66, 145,778.59 and 57,891.11

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Solution

The fourth proportional to 105,636.66, 145,778.59 and 57,891.11 is: 79,889.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,636.66 : 145,778.59 = 57,891.11 : x
  2. Step 2: Convert to fraction form
    105,636.66/145,778.59 = 57,891.11/x
  3. Step 3: Cross multiply
    105,636.66x = 145,778.59 × 57,891.11
  4. Step 4: Simplify right side
    105,636.66x = 8,439,283,407.17
  5. Step 5: Solve for x
    x = 8,439,283,407.17/105,636.66
  6. Step 6: Final answer
    x = 79,889.72

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1.5x scale

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.