Home / 92,921.15-128,231.34-50,479.72

Finding the Fourth Proportional to 92,921.15, 128,231.34 and 50,479.72

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Solution

The fourth proportional to 92,921.15, 128,231.34 and 50,479.72 is: 69,662.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,921.15 : 128,231.34 = 50,479.72 : x
  2. Step 2: Convert to fraction form
    92,921.15/128,231.34 = 50,479.72/x
  3. Step 3: Cross multiply
    92,921.15x = 128,231.34 × 50,479.72
  4. Step 4: Simplify right side
    92,921.15x = 6,473,082,138.42
  5. Step 5: Solve for x
    x = 6,473,082,138.42/92,921.15
  6. Step 6: Final answer
    x = 69,662.10

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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.