Home / 84,905.70-127,277.55-31,583.40

Finding the Fourth Proportional to 84,905.70, 127,277.55 and 31,583.40

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Solution

The fourth proportional to 84,905.70, 127,277.55 and 31,583.40 is: 47,344.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,905.70 : 127,277.55 = 31,583.40 : x
  2. Step 2: Convert to fraction form
    84,905.70/127,277.55 = 31,583.40/x
  3. Step 3: Cross multiply
    84,905.70x = 127,277.55 × 31,583.40
  4. Step 4: Simplify right side
    84,905.70x = 4,019,857,772.67
  5. Step 5: Solve for x
    x = 4,019,857,772.67/84,905.70
  6. Step 6: Final answer
    x = 47,344.97

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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.