Home / 55,127.72-76,086.80-31,254.48

Finding the Fourth Proportional to 55,127.72, 76,086.80 and 31,254.48

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Solution

The fourth proportional to 55,127.72, 76,086.80 and 31,254.48 is: 43,137.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,127.72 : 76,086.80 = 31,254.48 : x
  2. Step 2: Convert to fraction form
    55,127.72/76,086.80 = 31,254.48/x
  3. Step 3: Cross multiply
    55,127.72x = 76,086.80 × 31,254.48
  4. Step 4: Simplify right side
    55,127.72x = 2,378,053,368.86
  5. Step 5: Solve for x
    x = 2,378,053,368.86/55,127.72
  6. Step 6: Final answer
    x = 43,137.16

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1.5x scale

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.