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Finding the Fourth Proportional to 55,581.60, 83,410.80 and 40,010.40

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Solution

The fourth proportional to 55,581.60, 83,410.80 and 40,010.40 is: 60,043.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,581.60 : 83,410.80 = 40,010.40 : x
  2. Step 2: Convert to fraction form
    55,581.60/83,410.80 = 40,010.40/x
  3. Step 3: Cross multiply
    55,581.60x = 83,410.80 × 40,010.40
  4. Step 4: Simplify right side
    55,581.60x = 3,337,299,472.32
  5. Step 5: Solve for x
    x = 3,337,299,472.32/55,581.60
  6. Step 6: Final answer
    x = 60,043.24

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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.