Home / 66,615.14-91,931.57-38,320.82

Finding the Fourth Proportional to 66,615.14, 91,931.57 and 38,320.82

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Solution

The fourth proportional to 66,615.14, 91,931.57 and 38,320.82 is: 52,884.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,615.14 : 91,931.57 = 38,320.82 : x
  2. Step 2: Convert to fraction form
    66,615.14/91,931.57 = 38,320.82/x
  3. Step 3: Cross multiply
    66,615.14x = 91,931.57 × 38,320.82
  4. Step 4: Simplify right side
    66,615.14x = 3,522,893,146.29
  5. Step 5: Solve for x
    x = 3,522,893,146.29/66,615.14
  6. Step 6: Final answer
    x = 52,884.27

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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.