Home / 54,859.51-75,705.72-30,990.85

Finding the Fourth Proportional to 54,859.51, 75,705.72 and 30,990.85

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Solution

The fourth proportional to 54,859.51, 75,705.72 and 30,990.85 is: 42,767.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,859.51 : 75,705.72 = 30,990.85 : x
  2. Step 2: Convert to fraction form
    54,859.51/75,705.72 = 30,990.85/x
  3. Step 3: Cross multiply
    54,859.51x = 75,705.72 × 30,990.85
  4. Step 4: Simplify right side
    54,859.51x = 2,346,184,612.66
  5. Step 5: Solve for x
    x = 2,346,184,612.66/54,859.51
  6. Step 6: Final answer
    x = 42,767.14

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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.