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Finding the Fourth Proportional to 60,299.91, 90,463.64 and 20,856.98

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Solution

The fourth proportional to 60,299.91, 90,463.64 and 20,856.98 is: 31,290.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,299.91 : 90,463.64 = 20,856.98 : x
  2. Step 2: Convert to fraction form
    60,299.91/90,463.64 = 20,856.98/x
  3. Step 3: Cross multiply
    60,299.91x = 90,463.64 × 20,856.98
  4. Step 4: Simplify right side
    60,299.91x = 1,886,797,943.22
  5. Step 5: Solve for x
    x = 1,886,797,943.22/60,299.91
  6. Step 6: Final answer
    x = 31,290.23

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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.