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Finding the Fourth Proportional to 27,221,411.80, 40,832,117.70 and 20,502,947.80

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Solution

The fourth proportional to 27,221,411.80, 40,832,117.70 and 20,502,947.80 is: 30,754,421.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,221,411.80 : 40,832,117.70 = 20,502,947.80 : x
  2. Step 2: Convert to fraction form
    27,221,411.80/40,832,117.70 = 20,502,947.80/x
  3. Step 3: Cross multiply
    27,221,411.80x = 40,832,117.70 × 20,502,947.80
  4. Step 4: Simplify right side
    27,221,411.80x = 837,178,777,766,556.12
  5. Step 5: Solve for x
    x = 837,178,777,766,556.12/27,221,411.80
  6. Step 6: Final answer
    x = 30,754,421.70

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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.