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Finding the Fourth Proportional to 56,520.45, 84,822.80 and 21,528.45

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Solution

The fourth proportional to 56,520.45, 84,822.80 and 21,528.45 is: 32,308.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,520.45 : 84,822.80 = 21,528.45 : x
  2. Step 2: Convert to fraction form
    56,520.45/84,822.80 = 21,528.45/x
  3. Step 3: Cross multiply
    56,520.45x = 84,822.80 × 21,528.45
  4. Step 4: Simplify right side
    56,520.45x = 1,826,103,301.02
  5. Step 5: Solve for x
    x = 1,826,103,301.02/56,520.45
  6. Step 6: Final answer
    x = 32,308.72

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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.