Home / 55,897.68-77,138.64-30,747

Finding the Fourth Proportional to 55,897.68, 77,138.64 and 30,747

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Solution

The fourth proportional to 55,897.68, 77,138.64 and 30,747 is: 42,430.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,897.68 : 77,138.64 = 30,747 : x
  2. Step 2: Convert to fraction form
    55,897.68/77,138.64 = 30,747/x
  3. Step 3: Cross multiply
    55,897.68x = 77,138.64 × 30,747
  4. Step 4: Simplify right side
    55,897.68x = 2,371,781,764.08
  5. Step 5: Solve for x
    x = 2,371,781,764.08/55,897.68
  6. Step 6: Final answer
    x = 42,430.77

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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.