Home / 71,776.64-99,029.47-40,726.78

Finding the Fourth Proportional to 71,776.64, 99,029.47 and 40,726.78

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Solution

The fourth proportional to 71,776.64, 99,029.47 and 40,726.78 is: 56,190.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,776.64 : 99,029.47 = 40,726.78 : x
  2. Step 2: Convert to fraction form
    71,776.64/99,029.47 = 40,726.78/x
  3. Step 3: Cross multiply
    71,776.64x = 99,029.47 × 40,726.78
  4. Step 4: Simplify right side
    71,776.64x = 4,033,151,427.42
  5. Step 5: Solve for x
    x = 4,033,151,427.42/71,776.64
  6. Step 6: Final answer
    x = 56,190.31

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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.