Home / 87,630,076.80-121,053,200.64-79,776,472.32

Finding the Fourth Proportional to 87,630,076.80, 121,053,200.64 and 79,776,472.32

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Solution

The fourth proportional to 87,630,076.80, 121,053,200.64 and 79,776,472.32 is: 110,204,140.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,630,076.80 : 121,053,200.64 = 79,776,472.32 : x
  2. Step 2: Convert to fraction form
    87,630,076.80/121,053,200.64 = 79,776,472.32/x
  3. Step 3: Cross multiply
    87,630,076.80x = 121,053,200.64 × 79,776,472.32
  4. Step 4: Simplify right side
    87,630,076.80x = 9,657,197,310,104,366
  5. Step 5: Solve for x
    x = 9,657,197,310,104,366/87,630,076.80
  6. Step 6: Final answer
    x = 110,204,140.66

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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.