Home / 31,986,531.30-47,979,738.62-10,421,107.50

Finding the Fourth Proportional to 31,986,531.30, 47,979,738.62 and 10,421,107.50

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Solution

The fourth proportional to 31,986,531.30, 47,979,738.62 and 10,421,107.50 is: 15,631,642.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,986,531.30 : 47,979,738.62 = 10,421,107.50 : x
  2. Step 2: Convert to fraction form
    31,986,531.30/47,979,738.62 = 10,421,107.50/x
  3. Step 3: Cross multiply
    31,986,531.30x = 47,979,738.62 × 10,421,107.50
  4. Step 4: Simplify right side
    31,986,531.30x = 500,002,013,980,921.62
  5. Step 5: Solve for x
    x = 500,002,013,980,921.62/31,986,531.30
  6. Step 6: Final answer
    x = 15,631,642.25

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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.