Home / 81,971,081.60-122,956,622.40-21,386,807.60

Finding the Fourth Proportional to 81,971,081.60, 122,956,622.40 and 21,386,807.60

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Solution

The fourth proportional to 81,971,081.60, 122,956,622.40 and 21,386,807.60 is: 32,080,211.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,971,081.60 : 122,956,622.40 = 21,386,807.60 : x
  2. Step 2: Convert to fraction form
    81,971,081.60/122,956,622.40 = 21,386,807.60/x
  3. Step 3: Cross multiply
    81,971,081.60x = 122,956,622.40 × 21,386,807.60
  4. Step 4: Simplify right side
    81,971,081.60x = 2,629,649,626,414,650.50
  5. Step 5: Solve for x
    x = 2,629,649,626,414,650.50/81,971,081.60
  6. Step 6: Final answer
    x = 32,080,211.40

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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.