Home / 55,712.06-76,878.07-30,561.56

Finding the Fourth Proportional to 55,712.06, 76,878.07 and 30,561.56

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Solution

The fourth proportional to 55,712.06, 76,878.07 and 30,561.56 is: 42,172.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,712.06 : 76,878.07 = 30,561.56 : x
  2. Step 2: Convert to fraction form
    55,712.06/76,878.07 = 30,561.56/x
  3. Step 3: Cross multiply
    55,712.06x = 76,878.07 × 30,561.56
  4. Step 4: Simplify right side
    55,712.06x = 2,349,513,288.19
  5. Step 5: Solve for x
    x = 2,349,513,288.19/55,712.06
  6. Step 6: Final answer
    x = 42,172.44

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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.