Home / 81,860,956.40-122,791,434.60-38,814,235.40

Finding the Fourth Proportional to 81,860,956.40, 122,791,434.60 and 38,814,235.40

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Solution

The fourth proportional to 81,860,956.40, 122,791,434.60 and 38,814,235.40 is: 58,221,353.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,860,956.40 : 122,791,434.60 = 38,814,235.40 : x
  2. Step 2: Convert to fraction form
    81,860,956.40/122,791,434.60 = 38,814,235.40/x
  3. Step 3: Cross multiply
    81,860,956.40x = 122,791,434.60 × 38,814,235.40
  4. Step 4: Simplify right side
    81,860,956.40x = 4,766,055,647,668,104
  5. Step 5: Solve for x
    x = 4,766,055,647,668,104/81,860,956.40
  6. Step 6: Final answer
    x = 58,221,353.10

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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.