Home / 78,750,010.80-117,936,059.40-38,313,255.60

Finding the Fourth Proportional to 78,750,010.80, 117,936,059.40 and 38,313,255.60

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Solution

The fourth proportional to 78,750,010.80, 117,936,059.40 and 38,313,255.60 is: 57,377,952.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,750,010.80 : 117,936,059.40 = 38,313,255.60 : x
  2. Step 2: Convert to fraction form
    78,750,010.80/117,936,059.40 = 38,313,255.60/x
  3. Step 3: Cross multiply
    78,750,010.80x = 117,936,059.40 × 38,313,255.60
  4. Step 4: Simplify right side
    78,750,010.80x = 4,518,514,388,248,983
  5. Step 5: Solve for x
    x = 4,518,514,388,248,983/78,750,010.80
  6. Step 6: Final answer
    x = 57,377,952.62

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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.