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Finding the Fourth Proportional to 79,283.95, 118,925.82 and 19,312.39

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Solution

The fourth proportional to 79,283.95, 118,925.82 and 19,312.39 is: 28,968.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,283.95 : 118,925.82 = 19,312.39 : x
  2. Step 2: Convert to fraction form
    79,283.95/118,925.82 = 19,312.39/x
  3. Step 3: Cross multiply
    79,283.95x = 118,925.82 × 19,312.39
  4. Step 4: Simplify right side
    79,283.95x = 2,296,741,965.57
  5. Step 5: Solve for x
    x = 2,296,741,965.57/79,283.95
  6. Step 6: Final answer
    x = 28,968.56

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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.