Home / 55,013.63-75,920.62-31,139.79

Finding the Fourth Proportional to 55,013.63, 75,920.62 and 31,139.79

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Solution

The fourth proportional to 55,013.63, 75,920.62 and 31,139.79 is: 42,973.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,013.63 : 75,920.62 = 31,139.79 : x
  2. Step 2: Convert to fraction form
    55,013.63/75,920.62 = 31,139.79/x
  3. Step 3: Cross multiply
    55,013.63x = 75,920.62 × 31,139.79
  4. Step 4: Simplify right side
    55,013.63x = 2,364,152,275.42
  5. Step 5: Solve for x
    x = 2,364,152,275.42/55,013.63
  6. Step 6: Final answer
    x = 42,973.94

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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.