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Finding the Fourth Proportional to 77,287,852.80, 115,928,092.80 and 26,164,857.60

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Solution

The fourth proportional to 77,287,852.80, 115,928,092.80 and 26,164,857.60 is: 39,246,038.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,287,852.80 : 115,928,092.80 = 26,164,857.60 : x
  2. Step 2: Convert to fraction form
    77,287,852.80/115,928,092.80 = 26,164,857.60/x
  3. Step 3: Cross multiply
    77,287,852.80x = 115,928,092.80 × 26,164,857.60
  4. Step 4: Simplify right side
    77,287,852.80x = 3,033,242,039,951,585.50
  5. Step 5: Solve for x
    x = 3,033,242,039,951,585.50/77,287,852.80
  6. Step 6: Final answer
    x = 39,246,038.41

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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.