Home / 68,680,087.60-103,020,131.40-20,804,810.80

Finding the Fourth Proportional to 68,680,087.60, 103,020,131.40 and 20,804,810.80

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Solution

The fourth proportional to 68,680,087.60, 103,020,131.40 and 20,804,810.80 is: 31,207,216.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,680,087.60 : 103,020,131.40 = 20,804,810.80 : x
  2. Step 2: Convert to fraction form
    68,680,087.60/103,020,131.40 = 20,804,810.80/x
  3. Step 3: Cross multiply
    68,680,087.60x = 103,020,131.40 × 20,804,810.80
  4. Step 4: Simplify right side
    68,680,087.60x = 2,143,314,342,368,139.25
  5. Step 5: Solve for x
    x = 2,143,314,342,368,139.25/68,680,087.60
  6. Step 6: Final answer
    x = 31,207,216.20

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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.