Home / 81,817,816.32-122,694,829.84-30,671,928

Finding the Fourth Proportional to 81,817,816.32, 122,694,829.84 and 30,671,928

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Solution

The fourth proportional to 81,817,816.32, 122,694,829.84 and 30,671,928 is: 45,995,935.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,817,816.32 : 122,694,829.84 = 30,671,928 : x
  2. Step 2: Convert to fraction form
    81,817,816.32/122,694,829.84 = 30,671,928/x
  3. Step 3: Cross multiply
    81,817,816.32x = 122,694,829.84 × 30,671,928
  4. Step 4: Simplify right side
    81,817,816.32x = 3,763,286,986,824,731.50
  5. Step 5: Solve for x
    x = 3,763,286,986,824,731.50/81,817,816.32
  6. Step 6: Final answer
    x = 45,995,935.31

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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.