Home / 55,983.05-77,255.03-30,488.84

Finding the Fourth Proportional to 55,983.05, 77,255.03 and 30,488.84

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Solution

The fourth proportional to 55,983.05, 77,255.03 and 30,488.84 is: 42,073.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,983.05 : 77,255.03 = 30,488.84 : x
  2. Step 2: Convert to fraction form
    55,983.05/77,255.03 = 30,488.84/x
  3. Step 3: Cross multiply
    55,983.05x = 77,255.03 × 30,488.84
  4. Step 4: Simplify right side
    55,983.05x = 2,355,416,248.87
  5. Step 5: Solve for x
    x = 2,355,416,248.87/55,983.05
  6. Step 6: Final answer
    x = 42,073.74

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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.