Home / 78,005,775.40-117,008,663.10-37,694,991.40

Finding the Fourth Proportional to 78,005,775.40, 117,008,663.10 and 37,694,991.40

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Solution

The fourth proportional to 78,005,775.40, 117,008,663.10 and 37,694,991.40 is: 56,542,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,005,775.40 : 117,008,663.10 = 37,694,991.40 : x
  2. Step 2: Convert to fraction form
    78,005,775.40/117,008,663.10 = 37,694,991.40/x
  3. Step 3: Cross multiply
    78,005,775.40x = 117,008,663.10 × 37,694,991.40
  4. Step 4: Simplify right side
    78,005,775.40x = 4,410,640,549,279,997
  5. Step 5: Solve for x
    x = 4,410,640,549,279,997/78,005,775.40
  6. Step 6: Final answer
    x = 56,542,487.10

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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.