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Finding the Fourth Proportional to 54,220.40, 81,215.40 and 45,004.40

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Solution

The fourth proportional to 54,220.40, 81,215.40 and 45,004.40 is: 67,410.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,220.40 : 81,215.40 = 45,004.40 : x
  2. Step 2: Convert to fraction form
    54,220.40/81,215.40 = 45,004.40/x
  3. Step 3: Cross multiply
    54,220.40x = 81,215.40 × 45,004.40
  4. Step 4: Simplify right side
    54,220.40x = 3,655,050,347.76
  5. Step 5: Solve for x
    x = 3,655,050,347.76/54,220.40
  6. Step 6: Final answer
    x = 67,410.98

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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.