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Finding the Fourth Proportional to 79,258.58, 118,888.08 and 20,094.28

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Solution

The fourth proportional to 79,258.58, 118,888.08 and 20,094.28 is: 30,141.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,258.58 : 118,888.08 = 20,094.28 : x
  2. Step 2: Convert to fraction form
    79,258.58/118,888.08 = 20,094.28/x
  3. Step 3: Cross multiply
    79,258.58x = 118,888.08 × 20,094.28
  4. Step 4: Simplify right side
    79,258.58x = 2,388,970,368.18
  5. Step 5: Solve for x
    x = 2,388,970,368.18/79,258.58
  6. Step 6: Final answer
    x = 30,141.47

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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.