Home / 91,887,943.80-137,831,915.70-40,775,129.40

Finding the Fourth Proportional to 91,887,943.80, 137,831,915.70 and 40,775,129.40

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Solution

The fourth proportional to 91,887,943.80, 137,831,915.70 and 40,775,129.40 is: 61,162,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,887,943.80 : 137,831,915.70 = 40,775,129.40 : x
  2. Step 2: Convert to fraction form
    91,887,943.80/137,831,915.70 = 40,775,129.40/x
  3. Step 3: Cross multiply
    91,887,943.80x = 137,831,915.70 × 40,775,129.40
  4. Step 4: Simplify right side
    91,887,943.80x = 5,620,114,198,117,391
  5. Step 5: Solve for x
    x = 5,620,114,198,117,391/91,887,943.80
  6. Step 6: Final answer
    x = 61,162,694.10

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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.