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Finding the Fourth Proportional to 73,235.20, 109,852.80 and 28,863.40

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Solution

The fourth proportional to 73,235.20, 109,852.80 and 28,863.40 is: 43,295.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,235.20 : 109,852.80 = 28,863.40 : x
  2. Step 2: Convert to fraction form
    73,235.20/109,852.80 = 28,863.40/x
  3. Step 3: Cross multiply
    73,235.20x = 109,852.80 × 28,863.40
  4. Step 4: Simplify right side
    73,235.20x = 3,170,725,307.52
  5. Step 5: Solve for x
    x = 3,170,725,307.52/73,235.20
  6. Step 6: Final answer
    x = 43,295.10

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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.