Home / 42,798.87-64,229.81-20,309.62

Finding the Fourth Proportional to 42,798.87, 64,229.81 and 20,309.62

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Solution

The fourth proportional to 42,798.87, 64,229.81 and 20,309.62 is: 30,479.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,798.87 : 64,229.81 = 20,309.62 : x
  2. Step 2: Convert to fraction form
    42,798.87/64,229.81 = 20,309.62/x
  3. Step 3: Cross multiply
    42,798.87x = 64,229.81 × 20,309.62
  4. Step 4: Simplify right side
    42,798.87x = 1,304,483,033.77
  5. Step 5: Solve for x
    x = 1,304,483,033.77/42,798.87
  6. Step 6: Final answer
    x = 30,479.38

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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.