Home / 7,442,935.20-11,164,402.80-7,128,007.20

Finding the Fourth Proportional to 7,442,935.20, 11,164,402.80 and 7,128,007.20

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Solution

The fourth proportional to 7,442,935.20, 11,164,402.80 and 7,128,007.20 is: 10,692,010.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,442,935.20 : 11,164,402.80 = 7,128,007.20 : x
  2. Step 2: Convert to fraction form
    7,442,935.20/11,164,402.80 = 7,128,007.20/x
  3. Step 3: Cross multiply
    7,442,935.20x = 11,164,402.80 × 7,128,007.20
  4. Step 4: Simplify right side
    7,442,935.20x = 79,579,943,542,100.17
  5. Step 5: Solve for x
    x = 79,579,943,542,100.17/7,442,935.20
  6. Step 6: Final answer
    x = 10,692,010.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.