Home / 55,079.49-76,009.77-31,207.78

Finding the Fourth Proportional to 55,079.49, 76,009.77 and 31,207.78

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Solution

The fourth proportional to 55,079.49, 76,009.77 and 31,207.78 is: 43,066.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,079.49 : 76,009.77 = 31,207.78 : x
  2. Step 2: Convert to fraction form
    55,079.49/76,009.77 = 31,207.78/x
  3. Step 3: Cross multiply
    55,079.49x = 76,009.77 × 31,207.78
  4. Step 4: Simplify right side
    55,079.49x = 2,372,095,643.92
  5. Step 5: Solve for x
    x = 2,372,095,643.92/55,079.49
  6. Step 6: Final answer
    x = 43,066.77

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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.