Home / 31,821,242.80-47,731,864.20-19,728,007.60

Finding the Fourth Proportional to 31,821,242.80, 47,731,864.20 and 19,728,007.60

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Solution

The fourth proportional to 31,821,242.80, 47,731,864.20 and 19,728,007.60 is: 29,592,011.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,821,242.80 : 47,731,864.20 = 19,728,007.60 : x
  2. Step 2: Convert to fraction form
    31,821,242.80/47,731,864.20 = 19,728,007.60/x
  3. Step 3: Cross multiply
    31,821,242.80x = 47,731,864.20 × 19,728,007.60
  4. Step 4: Simplify right side
    31,821,242.80x = 941,654,579,699,768
  5. Step 5: Solve for x
    x = 941,654,579,699,768/31,821,242.80
  6. Step 6: Final answer
    x = 29,592,011.40

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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.