Home / 78,428.23-108,235.10-44,443.30

Finding the Fourth Proportional to 78,428.23, 108,235.10 and 44,443.30

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Solution

The fourth proportional to 78,428.23, 108,235.10 and 44,443.30 is: 61,334.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,428.23 : 108,235.10 = 44,443.30 : x
  2. Step 2: Convert to fraction form
    78,428.23/108,235.10 = 44,443.30/x
  3. Step 3: Cross multiply
    78,428.23x = 108,235.10 × 44,443.30
  4. Step 4: Simplify right side
    78,428.23x = 4,810,324,797.61
  5. Step 5: Solve for x
    x = 4,810,324,797.61/78,428.23
  6. Step 6: Final answer
    x = 61,334.10

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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.