Home / 79,282.84-109,415.36-52,378.20

Finding the Fourth Proportional to 79,282.84, 109,415.36 and 52,378.20

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Solution

The fourth proportional to 79,282.84, 109,415.36 and 52,378.20 is: 72,285.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,282.84 : 109,415.36 = 52,378.20 : x
  2. Step 2: Convert to fraction form
    79,282.84/109,415.36 = 52,378.20/x
  3. Step 3: Cross multiply
    79,282.84x = 109,415.36 × 52,378.20
  4. Step 4: Simplify right side
    79,282.84x = 5,730,979,609.15
  5. Step 5: Solve for x
    x = 5,730,979,609.15/79,282.84
  6. Step 6: Final answer
    x = 72,285.25

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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.