Home / 78,005,138.40-117,007,707.60-37,694,354.40

Finding the Fourth Proportional to 78,005,138.40, 117,007,707.60 and 37,694,354.40

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Solution

The fourth proportional to 78,005,138.40, 117,007,707.60 and 37,694,354.40 is: 56,541,531.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,005,138.40 : 117,007,707.60 = 37,694,354.40 : x
  2. Step 2: Convert to fraction form
    78,005,138.40/117,007,707.60 = 37,694,354.40/x
  3. Step 3: Cross multiply
    78,005,138.40x = 117,007,707.60 × 37,694,354.40
  4. Step 4: Simplify right side
    78,005,138.40x = 4,410,529,997,805,973
  5. Step 5: Solve for x
    x = 4,410,529,997,805,973/78,005,138.40
  6. Step 6: Final answer
    x = 56,541,531.60

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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.