Home / 81,413,939.42-122,020,859.13-37,635,480.21

Finding the Fourth Proportional to 81,413,939.42, 122,020,859.13 and 37,635,480.21

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Solution

The fourth proportional to 81,413,939.42, 122,020,859.13 and 37,635,480.21 is: 56,406,969.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,413,939.42 : 122,020,859.13 = 37,635,480.21 : x
  2. Step 2: Convert to fraction form
    81,413,939.42/122,020,859.13 = 37,635,480.21/x
  3. Step 3: Cross multiply
    81,413,939.42x = 122,020,859.13 × 37,635,480.21
  4. Step 4: Simplify right side
    81,413,939.42x = 4,592,313,628,994,313
  5. Step 5: Solve for x
    x = 4,592,313,628,994,313/81,413,939.42
  6. Step 6: Final answer
    x = 56,406,969.89

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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.