Home / 28,033,789.60-42,042,811.20-8,870,420.80

Finding the Fourth Proportional to 28,033,789.60, 42,042,811.20 and 8,870,420.80

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Solution

The fourth proportional to 28,033,789.60, 42,042,811.20 and 8,870,420.80 is: 13,303,139.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,033,789.60 : 42,042,811.20 = 8,870,420.80 : x
  2. Step 2: Convert to fraction form
    28,033,789.60/42,042,811.20 = 8,870,420.80/x
  3. Step 3: Cross multiply
    28,033,789.60x = 42,042,811.20 × 8,870,420.80
  4. Step 4: Simplify right side
    28,033,789.60x = 372,937,426,958,953
  5. Step 5: Solve for x
    x = 372,937,426,958,953/28,033,789.60
  6. Step 6: Final answer
    x = 13,303,139.97

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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.