Home / 81,393,564.40-122,090,346.60-55,565,531.80

Finding the Fourth Proportional to 81,393,564.40, 122,090,346.60 and 55,565,531.80

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Solution

The fourth proportional to 81,393,564.40, 122,090,346.60 and 55,565,531.80 is: 83,348,297.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,393,564.40 : 122,090,346.60 = 55,565,531.80 : x
  2. Step 2: Convert to fraction form
    81,393,564.40/122,090,346.60 = 55,565,531.80/x
  3. Step 3: Cross multiply
    81,393,564.40x = 122,090,346.60 × 55,565,531.80
  4. Step 4: Simplify right side
    81,393,564.40x = 6,784,015,036,475,321
  5. Step 5: Solve for x
    x = 6,784,015,036,475,321/81,393,564.40
  6. Step 6: Final answer
    x = 83,348,297.70

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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.