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Finding the Fourth Proportional to 55,904.71, 77,149.71 and 30,754.21

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Solution

The fourth proportional to 55,904.71, 77,149.71 and 30,754.21 is: 42,441.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,904.71 : 77,149.71 = 30,754.21 : x
  2. Step 2: Convert to fraction form
    55,904.71/77,149.71 = 30,754.21/x
  3. Step 3: Cross multiply
    55,904.71x = 77,149.71 × 30,754.21
  4. Step 4: Simplify right side
    55,904.71x = 2,372,678,382.78
  5. Step 5: Solve for x
    x = 2,372,678,382.78/55,904.71
  6. Step 6: Final answer
    x = 42,441.48

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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.