Home / 78,226.21-107,951.70-42,416.11

Finding the Fourth Proportional to 78,226.21, 107,951.70 and 42,416.11

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Solution

The fourth proportional to 78,226.21, 107,951.70 and 42,416.11 is: 58,533.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,226.21 : 107,951.70 = 42,416.11 : x
  2. Step 2: Convert to fraction form
    78,226.21/107,951.70 = 42,416.11/x
  3. Step 3: Cross multiply
    78,226.21x = 107,951.70 × 42,416.11
  4. Step 4: Simplify right side
    78,226.21x = 4,578,891,181.89
  5. Step 5: Solve for x
    x = 4,578,891,181.89/78,226.21
  6. Step 6: Final answer
    x = 58,533.98

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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.