Home / 81,932,292.48-122,869,978.56-45,596,133.12

Finding the Fourth Proportional to 81,932,292.48, 122,869,978.56 and 45,596,133.12

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Solution

The fourth proportional to 81,932,292.48, 122,869,978.56 and 45,596,133.12 is: 68,378,361.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,932,292.48 : 122,869,978.56 = 45,596,133.12 : x
  2. Step 2: Convert to fraction form
    81,932,292.48/122,869,978.56 = 45,596,133.12/x
  3. Step 3: Cross multiply
    81,932,292.48x = 122,869,978.56 × 45,596,133.12
  4. Step 4: Simplify right side
    81,932,292.48x = 5,602,395,898,873,306
  5. Step 5: Solve for x
    x = 5,602,395,898,873,306/81,932,292.48
  6. Step 6: Final answer
    x = 68,378,361.32

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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.