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Finding the Fourth Proportional to 60,606.86, 90,919.91 and 18,477.29

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Solution

The fourth proportional to 60,606.86, 90,919.91 and 18,477.29 is: 27,718.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,606.86 : 90,919.91 = 18,477.29 : x
  2. Step 2: Convert to fraction form
    60,606.86/90,919.91 = 18,477.29/x
  3. Step 3: Cross multiply
    60,606.86x = 90,919.91 × 18,477.29
  4. Step 4: Simplify right side
    60,606.86x = 1,679,953,543.84
  5. Step 5: Solve for x
    x = 1,679,953,543.84/60,606.86
  6. Step 6: Final answer
    x = 27,718.87

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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.