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Finding the Fourth Proportional to 84,912.40, 127,347.48 and 34,978.96

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Solution

The fourth proportional to 84,912.40, 127,347.48 and 34,978.96 is: 52,459.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,912.40 : 127,347.48 = 34,978.96 : x
  2. Step 2: Convert to fraction form
    84,912.40/127,347.48 = 34,978.96/x
  3. Step 3: Cross multiply
    84,912.40x = 127,347.48 × 34,978.96
  4. Step 4: Simplify right side
    84,912.40x = 4,454,482,409.02
  5. Step 5: Solve for x
    x = 4,454,482,409.02/84,912.40
  6. Step 6: Final answer
    x = 52,459.74

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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.