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Finding the Fourth Proportional to 109,054.53, 163,505.25 and 42,438.51

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Solution

The fourth proportional to 109,054.53, 163,505.25 and 42,438.51 is: 63,627.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,054.53 : 163,505.25 = 42,438.51 : x
  2. Step 2: Convert to fraction form
    109,054.53/163,505.25 = 42,438.51/x
  3. Step 3: Cross multiply
    109,054.53x = 163,505.25 × 42,438.51
  4. Step 4: Simplify right side
    109,054.53x = 6,938,919,187.18
  5. Step 5: Solve for x
    x = 6,938,919,187.18/109,054.53
  6. Step 6: Final answer
    x = 63,627.98

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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.