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Finding the Fourth Proportional to 54,509.60, 81,764.40 and 28,222.40

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Solution

The fourth proportional to 54,509.60, 81,764.40 and 28,222.40 is: 42,333.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,509.60 : 81,764.40 = 28,222.40 : x
  2. Step 2: Convert to fraction form
    54,509.60/81,764.40 = 28,222.40/x
  3. Step 3: Cross multiply
    54,509.60x = 81,764.40 × 28,222.40
  4. Step 4: Simplify right side
    54,509.60x = 2,307,587,602.56
  5. Step 5: Solve for x
    x = 2,307,587,602.56/54,509.60
  6. Step 6: Final answer
    x = 42,333.60

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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.