Home / 31,547,223.80-47,320,835.70-20,209,815.80

Finding the Fourth Proportional to 31,547,223.80, 47,320,835.70 and 20,209,815.80

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Solution

The fourth proportional to 31,547,223.80, 47,320,835.70 and 20,209,815.80 is: 30,314,723.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,547,223.80 : 47,320,835.70 = 20,209,815.80 : x
  2. Step 2: Convert to fraction form
    31,547,223.80/47,320,835.70 = 20,209,815.80/x
  3. Step 3: Cross multiply
    31,547,223.80x = 47,320,835.70 × 20,209,815.80
  4. Step 4: Simplify right side
    31,547,223.80x = 956,345,372,999,064.12
  5. Step 5: Solve for x
    x = 956,345,372,999,064.12/31,547,223.80
  6. Step 6: Final answer
    x = 30,314,723.70

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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.