Home / 66,639.68-91,926.36-42,739.76

Finding the Fourth Proportional to 66,639.68, 91,926.36 and 42,739.76

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Solution

The fourth proportional to 66,639.68, 91,926.36 and 42,739.76 is: 58,957.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,639.68 : 91,926.36 = 42,739.76 : x
  2. Step 2: Convert to fraction form
    66,639.68/91,926.36 = 42,739.76/x
  3. Step 3: Cross multiply
    66,639.68x = 91,926.36 × 42,739.76
  4. Step 4: Simplify right side
    66,639.68x = 3,928,910,564.07
  5. Step 5: Solve for x
    x = 3,928,910,564.07/66,639.68
  6. Step 6: Final answer
    x = 58,957.52

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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.