Home / 78,732.64-108,650.03-42,922.58

Finding the Fourth Proportional to 78,732.64, 108,650.03 and 42,922.58

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Solution

The fourth proportional to 78,732.64, 108,650.03 and 42,922.58 is: 59,232.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732.64 : 108,650.03 = 42,922.58 : x
  2. Step 2: Convert to fraction form
    78,732.64/108,650.03 = 42,922.58/x
  3. Step 3: Cross multiply
    78,732.64x = 108,650.03 × 42,922.58
  4. Step 4: Simplify right side
    78,732.64x = 4,663,538,846.81
  5. Step 5: Solve for x
    x = 4,663,538,846.81/78,732.64
  6. Step 6: Final answer
    x = 59,232.60

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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.