Home / 60,579.70-90,837.15-21,138.10

Finding the Fourth Proportional to 60,579.70, 90,837.15 and 21,138.10

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Solution

The fourth proportional to 60,579.70, 90,837.15 and 21,138.10 is: 31,695.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,579.70 : 90,837.15 = 21,138.10 : x
  2. Step 2: Convert to fraction form
    60,579.70/90,837.15 = 21,138.10/x
  3. Step 3: Cross multiply
    60,579.70x = 90,837.15 × 21,138.10
  4. Step 4: Simplify right side
    60,579.70x = 1,920,124,760.42
  5. Step 5: Solve for x
    x = 1,920,124,760.42/60,579.70
  6. Step 6: Final answer
    x = 31,695.84

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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.