Home / 55,019.05-75,928.10-31,145.21

Finding the Fourth Proportional to 55,019.05, 75,928.10 and 31,145.21

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Solution

The fourth proportional to 55,019.05, 75,928.10 and 31,145.21 is: 42,981.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,019.05 : 75,928.10 = 31,145.21 : x
  2. Step 2: Convert to fraction form
    55,019.05/75,928.10 = 31,145.21/x
  3. Step 3: Cross multiply
    55,019.05x = 75,928.10 × 31,145.21
  4. Step 4: Simplify right side
    55,019.05x = 2,364,796,619.40
  5. Step 5: Solve for x
    x = 2,364,796,619.40/55,019.05
  6. Step 6: Final answer
    x = 42,981.41

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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.