Home / 66,019.28-91,087.40-43,055.78

Finding the Fourth Proportional to 66,019.28, 91,087.40 and 43,055.78

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Solution

The fourth proportional to 66,019.28, 91,087.40 and 43,055.78 is: 59,404.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,019.28 : 91,087.40 = 43,055.78 : x
  2. Step 2: Convert to fraction form
    66,019.28/91,087.40 = 43,055.78/x
  3. Step 3: Cross multiply
    66,019.28x = 91,087.40 × 43,055.78
  4. Step 4: Simplify right side
    66,019.28x = 3,921,838,707.37
  5. Step 5: Solve for x
    x = 3,921,838,707.37/66,019.28
  6. Step 6: Final answer
    x = 59,404.45

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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.