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Finding the Fourth Proportional to 53,187,797.80, 79,781,696.70 and 19,110,255.40

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Solution

The fourth proportional to 53,187,797.80, 79,781,696.70 and 19,110,255.40 is: 28,665,383.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,187,797.80 : 79,781,696.70 = 19,110,255.40 : x
  2. Step 2: Convert to fraction form
    53,187,797.80/79,781,696.70 = 19,110,255.40/x
  3. Step 3: Cross multiply
    53,187,797.80x = 79,781,696.70 × 19,110,255.40
  4. Step 4: Simplify right side
    53,187,797.80x = 1,524,648,600,182,337
  5. Step 5: Solve for x
    x = 1,524,648,600,182,337/53,187,797.80
  6. Step 6: Final answer
    x = 28,665,383.10

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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.