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Finding the Fourth Proportional to 64,479.24, 88,905.60 and 54,389.88

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Solution

The fourth proportional to 64,479.24, 88,905.60 and 54,389.88 is: 74,994.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,479.24 : 88,905.60 = 54,389.88 : x
  2. Step 2: Convert to fraction form
    64,479.24/88,905.60 = 54,389.88/x
  3. Step 3: Cross multiply
    64,479.24x = 88,905.60 × 54,389.88
  4. Step 4: Simplify right side
    64,479.24x = 4,835,564,915.33
  5. Step 5: Solve for x
    x = 4,835,564,915.33/64,479.24
  6. Step 6: Final answer
    x = 74,994.14

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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.