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Finding the Fourth Proportional to 56,654.40, 84,989.70 and 19,216.20

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Solution

The fourth proportional to 56,654.40, 84,989.70 and 19,216.20 is: 28,827.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,654.40 : 84,989.70 = 19,216.20 : x
  2. Step 2: Convert to fraction form
    56,654.40/84,989.70 = 19,216.20/x
  3. Step 3: Cross multiply
    56,654.40x = 84,989.70 × 19,216.20
  4. Step 4: Simplify right side
    56,654.40x = 1,633,179,073.14
  5. Step 5: Solve for x
    x = 1,633,179,073.14/56,654.40
  6. Step 6: Final answer
    x = 28,827.05

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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.