Home / 81,862,480.80-122,793,721.20-33,315,345.45

Finding the Fourth Proportional to 81,862,480.80, 122,793,721.20 and 33,315,345.45

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Solution

The fourth proportional to 81,862,480.80, 122,793,721.20 and 33,315,345.45 is: 49,973,018.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,862,480.80 : 122,793,721.20 = 33,315,345.45 : x
  2. Step 2: Convert to fraction form
    81,862,480.80/122,793,721.20 = 33,315,345.45/x
  3. Step 3: Cross multiply
    81,862,480.80x = 122,793,721.20 × 33,315,345.45
  4. Step 4: Simplify right side
    81,862,480.80x = 4,090,915,240,868,988.50
  5. Step 5: Solve for x
    x = 4,090,915,240,868,988.50/81,862,480.80
  6. Step 6: Final answer
    x = 49,973,018.18

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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.