Home / 55,979.76-77,253.10-30,486.88

Finding the Fourth Proportional to 55,979.76, 77,253.10 and 30,486.88

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Solution

The fourth proportional to 55,979.76, 77,253.10 and 30,486.88 is: 42,072.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,979.76 : 77,253.10 = 30,486.88 : x
  2. Step 2: Convert to fraction form
    55,979.76/77,253.10 = 30,486.88/x
  3. Step 3: Cross multiply
    55,979.76x = 77,253.10 × 30,486.88
  4. Step 4: Simplify right side
    55,979.76x = 2,355,205,989.33
  5. Step 5: Solve for x
    x = 2,355,205,989.33/55,979.76
  6. Step 6: Final answer
    x = 42,072.46

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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.