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Finding the Fourth Proportional to 54,657.69, 75,448.77 and 42,724.87

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Solution

The fourth proportional to 54,657.69, 75,448.77 and 42,724.87 is: 58,976.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,657.69 : 75,448.77 = 42,724.87 : x
  2. Step 2: Convert to fraction form
    54,657.69/75,448.77 = 42,724.87/x
  3. Step 3: Cross multiply
    54,657.69x = 75,448.77 × 42,724.87
  4. Step 4: Simplify right side
    54,657.69x = 3,223,538,541.07
  5. Step 5: Solve for x
    x = 3,223,538,541.07/54,657.69
  6. Step 6: Final answer
    x = 58,976.86

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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.