Home / 42,763.80-64,145.70-38,171.10

Finding the Fourth Proportional to 42,763.80, 64,145.70 and 38,171.10

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Solution

The fourth proportional to 42,763.80, 64,145.70 and 38,171.10 is: 57,256.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,763.80 : 64,145.70 = 38,171.10 : x
  2. Step 2: Convert to fraction form
    42,763.80/64,145.70 = 38,171.10/x
  3. Step 3: Cross multiply
    42,763.80x = 64,145.70 × 38,171.10
  4. Step 4: Simplify right side
    42,763.80x = 2,448,511,929.27
  5. Step 5: Solve for x
    x = 2,448,511,929.27/42,763.80
  6. Step 6: Final answer
    x = 57,256.65

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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.