Home / 31,195,498.89-43,035,281.60-20,185,802.72

Finding the Fourth Proportional to 31,195,498.89, 43,035,281.60 and 20,185,802.72

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Solution

The fourth proportional to 31,195,498.89, 43,035,281.60 and 20,185,802.72 is: 27,847,020.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,195,498.89 : 43,035,281.60 = 20,185,802.72 : x
  2. Step 2: Convert to fraction form
    31,195,498.89/43,035,281.60 = 20,185,802.72/x
  3. Step 3: Cross multiply
    31,195,498.89x = 43,035,281.60 × 20,185,802.72
  4. Step 4: Simplify right side
    31,195,498.89x = 868,701,704,061,140.50
  5. Step 5: Solve for x
    x = 868,701,704,061,140.50/31,195,498.89
  6. Step 6: Final answer
    x = 27,847,020.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.