Home / 71,747.32-99,012.63-39,919.18

Finding the Fourth Proportional to 71,747.32, 99,012.63 and 39,919.18

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Solution

The fourth proportional to 71,747.32, 99,012.63 and 39,919.18 is: 55,089.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,747.32 : 99,012.63 = 39,919.18 : x
  2. Step 2: Convert to fraction form
    71,747.32/99,012.63 = 39,919.18/x
  3. Step 3: Cross multiply
    71,747.32x = 99,012.63 × 39,919.18
  4. Step 4: Simplify right side
    71,747.32x = 3,952,502,999.24
  5. Step 5: Solve for x
    x = 3,952,502,999.24/71,747.32
  6. Step 6: Final answer
    x = 55,089.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.