Home / 20,772,057.10-31,158,085.65-19,780,033.90

Finding the Fourth Proportional to 20,772,057.10, 31,158,085.65 and 19,780,033.90

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Solution

The fourth proportional to 20,772,057.10, 31,158,085.65 and 19,780,033.90 is: 29,670,050.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772,057.10 : 31,158,085.65 = 19,780,033.90 : x
  2. Step 2: Convert to fraction form
    20,772,057.10/31,158,085.65 = 19,780,033.90/x
  3. Step 3: Cross multiply
    20,772,057.10x = 31,158,085.65 × 19,780,033.90
  4. Step 4: Simplify right side
    20,772,057.10x = 616,307,990,416,103.50
  5. Step 5: Solve for x
    x = 616,307,990,416,103.50/20,772,057.10
  6. Step 6: Final answer
    x = 29,670,050.85

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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.