Home / 55,708.75-76,878.08-30,558.25

Finding the Fourth Proportional to 55,708.75, 76,878.08 and 30,558.25

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Solution

The fourth proportional to 55,708.75, 76,878.08 and 30,558.25 is: 42,170.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,708.75 : 76,878.08 = 30,558.25 : x
  2. Step 2: Convert to fraction form
    55,708.75/76,878.08 = 30,558.25/x
  3. Step 3: Cross multiply
    55,708.75x = 76,878.08 × 30,558.25
  4. Step 4: Simplify right side
    55,708.75x = 2,349,259,588.16
  5. Step 5: Solve for x
    x = 2,349,259,588.16/55,708.75
  6. Step 6: Final answer
    x = 42,170.39

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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.