Home / 90,855,078.40-136,282,617.60-54,575,372.80

Finding the Fourth Proportional to 90,855,078.40, 136,282,617.60 and 54,575,372.80

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Solution

The fourth proportional to 90,855,078.40, 136,282,617.60 and 54,575,372.80 is: 81,863,059.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,855,078.40 : 136,282,617.60 = 54,575,372.80 : x
  2. Step 2: Convert to fraction form
    90,855,078.40/136,282,617.60 = 54,575,372.80/x
  3. Step 3: Cross multiply
    90,855,078.40x = 136,282,617.60 × 54,575,372.80
  4. Step 4: Simplify right side
    90,855,078.40x = 7,437,674,661,679,841
  5. Step 5: Solve for x
    x = 7,437,674,661,679,841/90,855,078.40
  6. Step 6: Final answer
    x = 81,863,059.20

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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.