Home / 55,021-75,928.80-29,870.32

Finding the Fourth Proportional to 55,021, 75,928.80 and 29,870.32

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Solution

The fourth proportional to 55,021, 75,928.80 and 29,870.32 is: 41,220.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,021 : 75,928.80 = 29,870.32 : x
  2. Step 2: Convert to fraction form
    55,021/75,928.80 = 29,870.32/x
  3. Step 3: Cross multiply
    55,021x = 75,928.80 × 29,870.32
  4. Step 4: Simplify right side
    55,021x = 2,268,017,553.22
  5. Step 5: Solve for x
    x = 2,268,017,553.22/55,021
  6. Step 6: Final answer
    x = 41,220.94

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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.