Home / 74,905.78-112,366.18-21,599.08

Finding the Fourth Proportional to 74,905.78, 112,366.18 and 21,599.08

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Solution

The fourth proportional to 74,905.78, 112,366.18 and 21,599.08 is: 32,400.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,905.78 : 112,366.18 = 21,599.08 : x
  2. Step 2: Convert to fraction form
    74,905.78/112,366.18 = 21,599.08/x
  3. Step 3: Cross multiply
    74,905.78x = 112,366.18 × 21,599.08
  4. Step 4: Simplify right side
    74,905.78x = 2,427,006,111.11
  5. Step 5: Solve for x
    x = 2,427,006,111.11/74,905.78
  6. Step 6: Final answer
    x = 32,400.79

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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.