Home / 66,574.06-91,871.96-39,717.70

Finding the Fourth Proportional to 66,574.06, 91,871.96 and 39,717.70

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Solution

The fourth proportional to 66,574.06, 91,871.96 and 39,717.70 is: 54,810.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,574.06 : 91,871.96 = 39,717.70 : x
  2. Step 2: Convert to fraction form
    66,574.06/91,871.96 = 39,717.70/x
  3. Step 3: Cross multiply
    66,574.06x = 91,871.96 × 39,717.70
  4. Step 4: Simplify right side
    66,574.06x = 3,648,942,945.69
  5. Step 5: Solve for x
    x = 3,648,942,945.69/66,574.06
  6. Step 6: Final answer
    x = 54,810.28

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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.