Home / 66,275.88-91,436.22-39,419.52

Finding the Fourth Proportional to 66,275.88, 91,436.22 and 39,419.52

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Solution

The fourth proportional to 66,275.88, 91,436.22 and 39,419.52 is: 54,384.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,275.88 : 91,436.22 = 39,419.52 : x
  2. Step 2: Convert to fraction form
    66,275.88/91,436.22 = 39,419.52/x
  3. Step 3: Cross multiply
    66,275.88x = 91,436.22 × 39,419.52
  4. Step 4: Simplify right side
    66,275.88x = 3,604,371,903.01
  5. Step 5: Solve for x
    x = 3,604,371,903.01/66,275.88
  6. Step 6: Final answer
    x = 54,384.37

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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.