Home / 87,730,426.40-131,879,074.80-80,927,981.60

Finding the Fourth Proportional to 87,730,426.40, 131,879,074.80 and 80,927,981.60

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Solution

The fourth proportional to 87,730,426.40, 131,879,074.80 and 80,927,981.60 is: 121,653,430.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,730,426.40 : 131,879,074.80 = 80,927,981.60 : x
  2. Step 2: Convert to fraction form
    87,730,426.40/131,879,074.80 = 80,927,981.60/x
  3. Step 3: Cross multiply
    87,730,426.40x = 131,879,074.80 × 80,927,981.60
  4. Step 4: Simplify right side
    87,730,426.40x = 10,672,707,338,839,422
  5. Step 5: Solve for x
    x = 10,672,707,338,839,422/87,730,426.40
  6. Step 6: Final answer
    x = 121,653,430.59

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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.