Home / 83,047,640.80-124,571,461.20-78,264,671.80

Finding the Fourth Proportional to 83,047,640.80, 124,571,461.20 and 78,264,671.80

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Solution

The fourth proportional to 83,047,640.80, 124,571,461.20 and 78,264,671.80 is: 117,397,007.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,047,640.80 : 124,571,461.20 = 78,264,671.80 : x
  2. Step 2: Convert to fraction form
    83,047,640.80/124,571,461.20 = 78,264,671.80/x
  3. Step 3: Cross multiply
    83,047,640.80x = 124,571,461.20 × 78,264,671.80
  4. Step 4: Simplify right side
    83,047,640.80x = 9,749,544,526,464,434
  5. Step 5: Solve for x
    x = 9,749,544,526,464,434/83,047,640.80
  6. Step 6: Final answer
    x = 117,397,007.70

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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.