Home / 74,541.02-111,680.28-66,405.38

Finding the Fourth Proportional to 74,541.02, 111,680.28 and 66,405.38

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Solution

The fourth proportional to 74,541.02, 111,680.28 and 66,405.38 is: 99,491.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,541.02 : 111,680.28 = 66,405.38 : x
  2. Step 2: Convert to fraction form
    74,541.02/111,680.28 = 66,405.38/x
  3. Step 3: Cross multiply
    74,541.02x = 111,680.28 × 66,405.38
  4. Step 4: Simplify right side
    74,541.02x = 7,416,171,431.91
  5. Step 5: Solve for x
    x = 7,416,171,431.91/74,541.02
  6. Step 6: Final answer
    x = 99,491.15

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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.