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Finding the Fourth Proportional to 65,484.84, 90,364.94 and 38,628.44

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Solution

The fourth proportional to 65,484.84, 90,364.94 and 38,628.44 is: 53,304.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,484.84 : 90,364.94 = 38,628.44 : x
  2. Step 2: Convert to fraction form
    65,484.84/90,364.94 = 38,628.44/x
  3. Step 3: Cross multiply
    65,484.84x = 90,364.94 × 38,628.44
  4. Step 4: Simplify right side
    65,484.84x = 3,490,656,662.89
  5. Step 5: Solve for x
    x = 3,490,656,662.89/65,484.84
  6. Step 6: Final answer
    x = 53,304.81

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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.