Home / 45,212.81-67,809.47-28,550.58

Finding the Fourth Proportional to 45,212.81, 67,809.47 and 28,550.58

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Solution

The fourth proportional to 45,212.81, 67,809.47 and 28,550.58 is: 42,819.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,212.81 : 67,809.47 = 28,550.58 : x
  2. Step 2: Convert to fraction form
    45,212.81/67,809.47 = 28,550.58/x
  3. Step 3: Cross multiply
    45,212.81x = 67,809.47 × 28,550.58
  4. Step 4: Simplify right side
    45,212.81x = 1,935,999,555.24
  5. Step 5: Solve for x
    x = 1,935,999,555.24/45,212.81
  6. Step 6: Final answer
    x = 42,819.72

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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.