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Finding the Fourth Proportional to 84,825.60, 127,238.40 and 53,798.40

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Solution

The fourth proportional to 84,825.60, 127,238.40 and 53,798.40 is: 80,697.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,825.60 : 127,238.40 = 53,798.40 : x
  2. Step 2: Convert to fraction form
    84,825.60/127,238.40 = 53,798.40/x
  3. Step 3: Cross multiply
    84,825.60x = 127,238.40 × 53,798.40
  4. Step 4: Simplify right side
    84,825.60x = 6,845,222,338.56
  5. Step 5: Solve for x
    x = 6,845,222,338.56/84,825.60
  6. Step 6: Final answer
    x = 80,697.60

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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.