Home / 66,619.14-91,925.56-42,778.11

Finding the Fourth Proportional to 66,619.14, 91,925.56 and 42,778.11

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Solution

The fourth proportional to 66,619.14, 91,925.56 and 42,778.11 is: 59,028.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,619.14 : 91,925.56 = 42,778.11 : x
  2. Step 2: Convert to fraction form
    66,619.14/91,925.56 = 42,778.11/x
  3. Step 3: Cross multiply
    66,619.14x = 91,925.56 × 42,778.11
  4. Step 4: Simplify right side
    66,619.14x = 3,932,401,478.29
  5. Step 5: Solve for x
    x = 3,932,401,478.29/66,619.14
  6. Step 6: Final answer
    x = 59,028.10

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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.