Home / 55,128.01-76,074.85-30,927.51

Finding the Fourth Proportional to 55,128.01, 76,074.85 and 30,927.51

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Solution

The fourth proportional to 55,128.01, 76,074.85 and 30,927.51 is: 42,678.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,128.01 : 76,074.85 = 30,927.51 : x
  2. Step 2: Convert to fraction form
    55,128.01/76,074.85 = 30,927.51/x
  3. Step 3: Cross multiply
    55,128.01x = 76,074.85 × 30,927.51
  4. Step 4: Simplify right side
    55,128.01x = 2,352,805,684.12
  5. Step 5: Solve for x
    x = 2,352,805,684.12/55,128.01
  6. Step 6: Final answer
    x = 42,678.95

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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.