Home / 74,014.64-111,038.52-21,428.12

Finding the Fourth Proportional to 74,014.64, 111,038.52 and 21,428.12

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Solution

The fourth proportional to 74,014.64, 111,038.52 and 21,428.12 is: 32,146.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,014.64 : 111,038.52 = 21,428.12 : x
  2. Step 2: Convert to fraction form
    74,014.64/111,038.52 = 21,428.12/x
  3. Step 3: Cross multiply
    74,014.64x = 111,038.52 × 21,428.12
  4. Step 4: Simplify right side
    74,014.64x = 2,379,346,731.18
  5. Step 5: Solve for x
    x = 2,379,346,731.18/74,014.64
  6. Step 6: Final answer
    x = 32,146.97

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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.