Home / 82,987,310.40-124,480,965.60-77,318,606.40

Finding the Fourth Proportional to 82,987,310.40, 124,480,965.60 and 77,318,606.40

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Solution

The fourth proportional to 82,987,310.40, 124,480,965.60 and 77,318,606.40 is: 115,977,909.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,987,310.40 : 124,480,965.60 = 77,318,606.40 : x
  2. Step 2: Convert to fraction form
    82,987,310.40/124,480,965.60 = 77,318,606.40/x
  3. Step 3: Cross multiply
    82,987,310.40x = 124,480,965.60 × 77,318,606.40
  4. Step 4: Simplify right side
    82,987,310.40x = 9,624,694,783,518,340
  5. Step 5: Solve for x
    x = 9,624,694,783,518,340/82,987,310.40
  6. Step 6: Final answer
    x = 115,977,909.60

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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.