Home / 72,261,866.90-99,721,476.81-39,222,123.04

Finding the Fourth Proportional to 72,261,866.90, 99,721,476.81 and 39,222,123.04

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Solution

The fourth proportional to 72,261,866.90, 99,721,476.81 and 39,222,123.04 is: 54,126,584.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,261,866.90 : 99,721,476.81 = 39,222,123.04 : x
  2. Step 2: Convert to fraction form
    72,261,866.90/99,721,476.81 = 39,222,123.04/x
  3. Step 3: Cross multiply
    72,261,866.90x = 99,721,476.81 × 39,222,123.04
  4. Step 4: Simplify right side
    72,261,866.90x = 3,911,288,032,782,000.50
  5. Step 5: Solve for x
    x = 3,911,288,032,782,000.50/72,261,866.90
  6. Step 6: Final answer
    x = 54,126,584.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.