Home / 72,261,867.90-99,721,478.19-39,222,124.04

Finding the Fourth Proportional to 72,261,867.90, 99,721,478.19 and 39,222,124.04

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Solution

The fourth proportional to 72,261,867.90, 99,721,478.19 and 39,222,124.04 is: 54,126,585.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,261,867.90 : 99,721,478.19 = 39,222,124.04 : x
  2. Step 2: Convert to fraction form
    72,261,867.90/99,721,478.19 = 39,222,124.04/x
  3. Step 3: Cross multiply
    72,261,867.90x = 99,721,478.19 × 39,222,124.04
  4. Step 4: Simplify right side
    72,261,867.90x = 3,911,288,187,020,334.50
  5. Step 5: Solve for x
    x = 3,911,288,187,020,334.50/72,261,867.90
  6. Step 6: Final answer
    x = 54,126,585.72

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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.