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Finding the Fourth Proportional to 84,809.80, 127,214.70 and 29,411.40

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Solution

The fourth proportional to 84,809.80, 127,214.70 and 29,411.40 is: 44,117.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,809.80 : 127,214.70 = 29,411.40 : x
  2. Step 2: Convert to fraction form
    84,809.80/127,214.70 = 29,411.40/x
  3. Step 3: Cross multiply
    84,809.80x = 127,214.70 × 29,411.40
  4. Step 4: Simplify right side
    84,809.80x = 3,741,562,427.58
  5. Step 5: Solve for x
    x = 3,741,562,427.58/84,809.80
  6. Step 6: Final answer
    x = 44,117.10

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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.