Home / 86,172,631.20-129,342,927.60-43,090,480.80

Finding the Fourth Proportional to 86,172,631.20, 129,342,927.60 and 43,090,480.80

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Solution

The fourth proportional to 86,172,631.20, 129,342,927.60 and 43,090,480.80 is: 64,677,715.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,172,631.20 : 129,342,927.60 = 43,090,480.80 : x
  2. Step 2: Convert to fraction form
    86,172,631.20/129,342,927.60 = 43,090,480.80/x
  3. Step 3: Cross multiply
    86,172,631.20x = 129,342,927.60 × 43,090,480.80
  4. Step 4: Simplify right side
    86,172,631.20x = 5,573,448,938,363,589
  5. Step 5: Solve for x
    x = 5,573,448,938,363,589/86,172,631.20
  6. Step 6: Final answer
    x = 64,677,715.66

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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.