Home / 55,538.16-76,640.88-30,387.12

Finding the Fourth Proportional to 55,538.16, 76,640.88 and 30,387.12

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Solution

The fourth proportional to 55,538.16, 76,640.88 and 30,387.12 is: 41,933.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,538.16 : 76,640.88 = 30,387.12 : x
  2. Step 2: Convert to fraction form
    55,538.16/76,640.88 = 30,387.12/x
  3. Step 3: Cross multiply
    55,538.16x = 76,640.88 × 30,387.12
  4. Step 4: Simplify right side
    55,538.16x = 2,328,895,617.47
  5. Step 5: Solve for x
    x = 2,328,895,617.47/55,538.16
  6. Step 6: Final answer
    x = 41,933.25

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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.