Home / 66,472,582.80-91,747,469.64-38,979,368.40

Finding the Fourth Proportional to 66,472,582.80, 91,747,469.64 and 38,979,368.40

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Solution

The fourth proportional to 66,472,582.80, 91,747,469.64 and 38,979,368.40 is: 53,800,503.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,472,582.80 : 91,747,469.64 = 38,979,368.40 : x
  2. Step 2: Convert to fraction form
    66,472,582.80/91,747,469.64 = 38,979,368.40/x
  3. Step 3: Cross multiply
    66,472,582.80x = 91,747,469.64 × 38,979,368.40
  4. Step 4: Simplify right side
    66,472,582.80x = 3,576,258,418,865,375.50
  5. Step 5: Solve for x
    x = 3,576,258,418,865,375.50/66,472,582.80
  6. Step 6: Final answer
    x = 53,800,503.43

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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.