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Finding the Fourth Proportional to 55,891.76, 77,130.95 and 30,398.36

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Solution

The fourth proportional to 55,891.76, 77,130.95 and 30,398.36 is: 41,949.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,891.76 : 77,130.95 = 30,398.36 : x
  2. Step 2: Convert to fraction form
    55,891.76/77,130.95 = 30,398.36/x
  3. Step 3: Cross multiply
    55,891.76x = 77,130.95 × 30,398.36
  4. Step 4: Simplify right side
    55,891.76x = 2,344,653,847.60
  5. Step 5: Solve for x
    x = 2,344,653,847.60/55,891.76
  6. Step 6: Final answer
    x = 41,949.91

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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.