Home / 55,721.12-76,892.64-30,570.08

Finding the Fourth Proportional to 55,721.12, 76,892.64 and 30,570.08

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Solution

The fourth proportional to 55,721.12, 76,892.64 and 30,570.08 is: 42,185.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,721.12 : 76,892.64 = 30,570.08 : x
  2. Step 2: Convert to fraction form
    55,721.12/76,892.64 = 30,570.08/x
  3. Step 3: Cross multiply
    55,721.12x = 76,892.64 × 30,570.08
  4. Step 4: Simplify right side
    55,721.12x = 2,350,614,156.21
  5. Step 5: Solve for x
    x = 2,350,614,156.21/55,721.12
  6. Step 6: Final answer
    x = 42,185.34

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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.