Home / 82,718,812.80-124,078,219.20-65,586,729.60

Finding the Fourth Proportional to 82,718,812.80, 124,078,219.20 and 65,586,729.60

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Solution

The fourth proportional to 82,718,812.80, 124,078,219.20 and 65,586,729.60 is: 98,380,094.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,718,812.80 : 124,078,219.20 = 65,586,729.60 : x
  2. Step 2: Convert to fraction form
    82,718,812.80/124,078,219.20 = 65,586,729.60/x
  3. Step 3: Cross multiply
    82,718,812.80x = 124,078,219.20 × 65,586,729.60
  4. Step 4: Simplify right side
    82,718,812.80x = 8,137,884,611,919,929
  5. Step 5: Solve for x
    x = 8,137,884,611,919,929/82,718,812.80
  6. Step 6: Final answer
    x = 98,380,094.40

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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.