Home / 81,093,684.76-111,881,239.98-61,494,155.80

Finding the Fourth Proportional to 81,093,684.76, 111,881,239.98 and 61,494,155.80

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Solution

The fourth proportional to 81,093,684.76, 111,881,239.98 and 61,494,155.80 is: 84,840,668.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,093,684.76 : 111,881,239.98 = 61,494,155.80 : x
  2. Step 2: Convert to fraction form
    81,093,684.76/111,881,239.98 = 61,494,155.80/x
  3. Step 3: Cross multiply
    81,093,684.76x = 111,881,239.98 × 61,494,155.80
  4. Step 4: Simplify right side
    81,093,684.76x = 6,880,042,402,427,309
  5. Step 5: Solve for x
    x = 6,880,042,402,427,309/81,093,684.76
  6. Step 6: Final answer
    x = 84,840,668.21

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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.