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Finding the Fourth Proportional to 101,915.08, 152,716.76 and 42,718.48

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Solution

The fourth proportional to 101,915.08, 152,716.76 and 42,718.48 is: 64,012.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,915.08 : 152,716.76 = 42,718.48 : x
  2. Step 2: Convert to fraction form
    101,915.08/152,716.76 = 42,718.48/x
  3. Step 3: Cross multiply
    101,915.08x = 152,716.76 × 42,718.48
  4. Step 4: Simplify right side
    101,915.08x = 6,523,827,857.72
  5. Step 5: Solve for x
    x = 6,523,827,857.72/101,915.08
  6. Step 6: Final answer
    x = 64,012.39

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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.