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Finding the Fourth Proportional to 55,891.51, 77,130.81 and 30,398.13

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Solution

The fourth proportional to 55,891.51, 77,130.81 and 30,398.13 is: 41,949.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,891.51 : 77,130.81 = 30,398.13 : x
  2. Step 2: Convert to fraction form
    55,891.51/77,130.81 = 30,398.13/x
  3. Step 3: Cross multiply
    55,891.51x = 77,130.81 × 30,398.13
  4. Step 4: Simplify right side
    55,891.51x = 2,344,632,389.39
  5. Step 5: Solve for x
    x = 2,344,632,389.39/55,891.51
  6. Step 6: Final answer
    x = 41,949.71

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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.