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Finding the Fourth Proportional to 56,808.80, 85,210.24 and 21,745.76

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Solution

The fourth proportional to 56,808.80, 85,210.24 and 21,745.76 is: 32,617.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,808.80 : 85,210.24 = 21,745.76 : x
  2. Step 2: Convert to fraction form
    56,808.80/85,210.24 = 21,745.76/x
  3. Step 3: Cross multiply
    56,808.80x = 85,210.24 × 21,745.76
  4. Step 4: Simplify right side
    56,808.80x = 1,852,961,428.58
  5. Step 5: Solve for x
    x = 1,852,961,428.58/56,808.80
  6. Step 6: Final answer
    x = 32,617.51

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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.