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Finding the Fourth Proportional to 56,661.76, 85,006.08 and 17,221.12

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Solution

The fourth proportional to 56,661.76, 85,006.08 and 17,221.12 is: 25,835.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,661.76 : 85,006.08 = 17,221.12 : x
  2. Step 2: Convert to fraction form
    56,661.76/85,006.08 = 17,221.12/x
  3. Step 3: Cross multiply
    56,661.76x = 85,006.08 × 17,221.12
  4. Step 4: Simplify right side
    56,661.76x = 1,463,899,904.41
  5. Step 5: Solve for x
    x = 1,463,899,904.41/56,661.76
  6. Step 6: Final answer
    x = 25,835.76

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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.