Home / 81,686,361.23-122,565,725.44-42,815,575.39

Finding the Fourth Proportional to 81,686,361.23, 122,565,725.44 and 42,815,575.39

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Solution

The fourth proportional to 81,686,361.23, 122,565,725.44 and 42,815,575.39 is: 64,242,328.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,686,361.23 : 122,565,725.44 = 42,815,575.39 : x
  2. Step 2: Convert to fraction form
    81,686,361.23/122,565,725.44 = 42,815,575.39/x
  3. Step 3: Cross multiply
    81,686,361.23x = 122,565,725.44 × 42,815,575.39
  4. Step 4: Simplify right side
    81,686,361.23x = 5,247,722,057,592,283
  5. Step 5: Solve for x
    x = 5,247,722,057,592,283/81,686,361.23
  6. Step 6: Final answer
    x = 64,242,328.57

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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.