Home / 55,055.46-75,904.20-39,729.12

Finding the Fourth Proportional to 55,055.46, 75,904.20 and 39,729.12

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Solution

The fourth proportional to 55,055.46, 75,904.20 and 39,729.12 is: 54,773.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,055.46 : 75,904.20 = 39,729.12 : x
  2. Step 2: Convert to fraction form
    55,055.46/75,904.20 = 39,729.12/x
  3. Step 3: Cross multiply
    55,055.46x = 75,904.20 × 39,729.12
  4. Step 4: Simplify right side
    55,055.46x = 3,015,607,070.30
  5. Step 5: Solve for x
    x = 3,015,607,070.30/55,055.46
  6. Step 6: Final answer
    x = 54,773.99

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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.