Home / 81,480,913.20-122,221,369.80-72,552,704.40

Finding the Fourth Proportional to 81,480,913.20, 122,221,369.80 and 72,552,704.40

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Solution

The fourth proportional to 81,480,913.20, 122,221,369.80 and 72,552,704.40 is: 108,829,056.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,480,913.20 : 122,221,369.80 = 72,552,704.40 : x
  2. Step 2: Convert to fraction form
    81,480,913.20/122,221,369.80 = 72,552,704.40/x
  3. Step 3: Cross multiply
    81,480,913.20x = 122,221,369.80 × 72,552,704.40
  4. Step 4: Simplify right side
    81,480,913.20x = 8,867,490,914,462,488
  5. Step 5: Solve for x
    x = 8,867,490,914,462,488/81,480,913.20
  6. Step 6: Final answer
    x = 108,829,056.60

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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.