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Finding the Fourth Proportional to 53,460, 73,724.58 and 38,427.21

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Solution

The fourth proportional to 53,460, 73,724.58 and 38,427.21 is: 52,993.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,460 : 73,724.58 = 38,427.21 : x
  2. Step 2: Convert to fraction form
    53,460/73,724.58 = 38,427.21/x
  3. Step 3: Cross multiply
    53,460x = 73,724.58 × 38,427.21
  4. Step 4: Simplify right side
    53,460x = 2,833,029,917.82
  5. Step 5: Solve for x
    x = 2,833,029,917.82/53,460
  6. Step 6: Final answer
    x = 52,993.45

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.