Home / 78,028,211.76-107,678,941.56-43,223,156.52

Finding the Fourth Proportional to 78,028,211.76, 107,678,941.56 and 43,223,156.52

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Solution

The fourth proportional to 78,028,211.76, 107,678,941.56 and 43,223,156.52 is: 59,647,961.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,028,211.76 : 107,678,941.56 = 43,223,156.52 : x
  2. Step 2: Convert to fraction form
    78,028,211.76/107,678,941.56 = 43,223,156.52/x
  3. Step 3: Cross multiply
    78,028,211.76x = 107,678,941.56 × 43,223,156.52
  4. Step 4: Simplify right side
    78,028,211.76x = 4,654,223,744,955,813
  5. Step 5: Solve for x
    x = 4,654,223,744,955,813/78,028,211.76
  6. Step 6: Final answer
    x = 59,647,961.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.