Home / 55,829.80-77,044.25-30,678.76

Finding the Fourth Proportional to 55,829.80, 77,044.25 and 30,678.76

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Solution

The fourth proportional to 55,829.80, 77,044.25 and 30,678.76 is: 42,336.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,829.80 : 77,044.25 = 30,678.76 : x
  2. Step 2: Convert to fraction form
    55,829.80/77,044.25 = 30,678.76/x
  3. Step 3: Cross multiply
    55,829.80x = 77,044.25 × 30,678.76
  4. Step 4: Simplify right side
    55,829.80x = 2,363,622,055.13
  5. Step 5: Solve for x
    x = 2,363,622,055.13/55,829.80
  6. Step 6: Final answer
    x = 42,336.21

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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.