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Finding the Fourth Proportional to 84,928.60, 127,392.90 and 55,404.10

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Solution

The fourth proportional to 84,928.60, 127,392.90 and 55,404.10 is: 83,106.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,928.60 : 127,392.90 = 55,404.10 : x
  2. Step 2: Convert to fraction form
    84,928.60/127,392.90 = 55,404.10/x
  3. Step 3: Cross multiply
    84,928.60x = 127,392.90 × 55,404.10
  4. Step 4: Simplify right side
    84,928.60x = 7,058,088,970.89
  5. Step 5: Solve for x
    x = 7,058,088,970.89/84,928.60
  6. Step 6: Final answer
    x = 83,106.15

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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.