Home / 78,774.19-108,799.07-57,359.68

Finding the Fourth Proportional to 78,774.19, 108,799.07 and 57,359.68

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Solution

The fourth proportional to 78,774.19, 108,799.07 and 57,359.68 is: 79,222.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,774.19 : 108,799.07 = 57,359.68 : x
  2. Step 2: Convert to fraction form
    78,774.19/108,799.07 = 57,359.68/x
  3. Step 3: Cross multiply
    78,774.19x = 108,799.07 × 57,359.68
  4. Step 4: Simplify right side
    78,774.19x = 6,240,679,280.70
  5. Step 5: Solve for x
    x = 6,240,679,280.70/78,774.19
  6. Step 6: Final answer
    x = 79,222.39

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1.5x scale

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.