Home / 85,703,617.60-128,555,426.40-63,879,107.20

Finding the Fourth Proportional to 85,703,617.60, 128,555,426.40 and 63,879,107.20

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Solution

The fourth proportional to 85,703,617.60, 128,555,426.40 and 63,879,107.20 is: 95,818,660.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,703,617.60 : 128,555,426.40 = 63,879,107.20 : x
  2. Step 2: Convert to fraction form
    85,703,617.60/128,555,426.40 = 63,879,107.20/x
  3. Step 3: Cross multiply
    85,703,617.60x = 128,555,426.40 × 63,879,107.20
  4. Step 4: Simplify right side
    85,703,617.60x = 8,212,005,864,147,311
  5. Step 5: Solve for x
    x = 8,212,005,864,147,311/85,703,617.60
  6. Step 6: Final answer
    x = 95,818,660.80

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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.