Home / 84,811.70-127,217.55-25,688.90

Finding the Fourth Proportional to 84,811.70, 127,217.55 and 25,688.90

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Solution

The fourth proportional to 84,811.70, 127,217.55 and 25,688.90 is: 38,533.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,811.70 : 127,217.55 = 25,688.90 : x
  2. Step 2: Convert to fraction form
    84,811.70/127,217.55 = 25,688.90/x
  3. Step 3: Cross multiply
    84,811.70x = 127,217.55 × 25,688.90
  4. Step 4: Simplify right side
    84,811.70x = 3,268,078,920.20
  5. Step 5: Solve for x
    x = 3,268,078,920.20/84,811.70
  6. Step 6: Final answer
    x = 38,533.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.