Home / 90,415.05-124,746.89-52,171.53

Finding the Fourth Proportional to 90,415.05, 124,746.89 and 52,171.53

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Solution

The fourth proportional to 90,415.05, 124,746.89 and 52,171.53 is: 71,981.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,415.05 : 124,746.89 = 52,171.53 : x
  2. Step 2: Convert to fraction form
    90,415.05/124,746.89 = 52,171.53/x
  3. Step 3: Cross multiply
    90,415.05x = 124,746.89 × 52,171.53
  4. Step 4: Simplify right side
    90,415.05x = 6,508,235,853.18
  5. Step 5: Solve for x
    x = 6,508,235,853.18/90,415.05
  6. Step 6: Final answer
    x = 71,981.78

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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.