Home / 42,990.30-64,464.30-25,255.50

Finding the Fourth Proportional to 42,990.30, 64,464.30 and 25,255.50

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Solution

The fourth proportional to 42,990.30, 64,464.30 and 25,255.50 is: 37,870.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,990.30 : 64,464.30 = 25,255.50 : x
  2. Step 2: Convert to fraction form
    42,990.30/64,464.30 = 25,255.50/x
  3. Step 3: Cross multiply
    42,990.30x = 64,464.30 × 25,255.50
  4. Step 4: Simplify right side
    42,990.30x = 1,628,078,128.65
  5. Step 5: Solve for x
    x = 1,628,078,128.65/42,990.30
  6. Step 6: Final answer
    x = 37,870.83

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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.