Home / 55,918.06-77,165.40-30,767.56

Finding the Fourth Proportional to 55,918.06, 77,165.40 and 30,767.56

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Solution

The fourth proportional to 55,918.06, 77,165.40 and 30,767.56 is: 42,458.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,918.06 : 77,165.40 = 30,767.56 : x
  2. Step 2: Convert to fraction form
    55,918.06/77,165.40 = 30,767.56/x
  3. Step 3: Cross multiply
    55,918.06x = 77,165.40 × 30,767.56
  4. Step 4: Simplify right side
    55,918.06x = 2,374,191,074.42
  5. Step 5: Solve for x
    x = 2,374,191,074.42/55,918.06
  6. Step 6: Final answer
    x = 42,458.39

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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.