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Finding the Fourth Proportional to 43,283.70, 64,925.55 and 28,509.30

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Solution

The fourth proportional to 43,283.70, 64,925.55 and 28,509.30 is: 42,763.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,283.70 : 64,925.55 = 28,509.30 : x
  2. Step 2: Convert to fraction form
    43,283.70/64,925.55 = 28,509.30/x
  3. Step 3: Cross multiply
    43,283.70x = 64,925.55 × 28,509.30
  4. Step 4: Simplify right side
    43,283.70x = 1,850,981,982.62
  5. Step 5: Solve for x
    x = 1,850,981,982.62/43,283.70
  6. Step 6: Final answer
    x = 42,763.95

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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.