Home / 78,226.20-107,952.30-42,416.10

Finding the Fourth Proportional to 78,226.20, 107,952.30 and 42,416.10

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Solution

The fourth proportional to 78,226.20, 107,952.30 and 42,416.10 is: 58,534.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,226.20 : 107,952.30 = 42,416.10 : x
  2. Step 2: Convert to fraction form
    78,226.20/107,952.30 = 42,416.10/x
  3. Step 3: Cross multiply
    78,226.20x = 107,952.30 × 42,416.10
  4. Step 4: Simplify right side
    78,226.20x = 4,578,915,552.03
  5. Step 5: Solve for x
    x = 4,578,915,552.03/78,226.20
  6. Step 6: Final answer
    x = 58,534.30

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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.