Home / 31,547,228.80-47,320,843.20-20,209,820.80

Finding the Fourth Proportional to 31,547,228.80, 47,320,843.20 and 20,209,820.80

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Solution

The fourth proportional to 31,547,228.80, 47,320,843.20 and 20,209,820.80 is: 30,314,731.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,547,228.80 : 47,320,843.20 = 20,209,820.80 : x
  2. Step 2: Convert to fraction form
    31,547,228.80/47,320,843.20 = 20,209,820.80/x
  3. Step 3: Cross multiply
    31,547,228.80x = 47,320,843.20 × 20,209,820.80
  4. Step 4: Simplify right side
    31,547,228.80x = 956,345,761,176,898.62
  5. Step 5: Solve for x
    x = 956,345,761,176,898.62/31,547,228.80
  6. Step 6: Final answer
    x = 30,314,731.20

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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.