Home / 78,228.84-117,353.10-38,249.16

Finding the Fourth Proportional to 78,228.84, 117,353.10 and 38,249.16

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Solution

The fourth proportional to 78,228.84, 117,353.10 and 38,249.16 is: 57,378.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,228.84 : 117,353.10 = 38,249.16 : x
  2. Step 2: Convert to fraction form
    78,228.84/117,353.10 = 38,249.16/x
  3. Step 3: Cross multiply
    78,228.84x = 117,353.10 × 38,249.16
  4. Step 4: Simplify right side
    78,228.84x = 4,488,657,498.40
  5. Step 5: Solve for x
    x = 4,488,657,498.40/78,228.84
  6. Step 6: Final answer
    x = 57,378.55

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1.5x scale

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.