Home / 78,529.41-108,371.88-42,719.45

Finding the Fourth Proportional to 78,529.41, 108,371.88 and 42,719.45

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Solution

The fourth proportional to 78,529.41, 108,371.88 and 42,719.45 is: 58,953.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,529.41 : 108,371.88 = 42,719.45 : x
  2. Step 2: Convert to fraction form
    78,529.41/108,371.88 = 42,719.45/x
  3. Step 3: Cross multiply
    78,529.41x = 108,371.88 × 42,719.45
  4. Step 4: Simplify right side
    78,529.41x = 4,629,586,567.21
  5. Step 5: Solve for x
    x = 4,629,586,567.21/78,529.41
  6. Step 6: Final answer
    x = 58,953.54

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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.