Home / 78,916.15-118,380.39-26,325.58

Finding the Fourth Proportional to 78,916.15, 118,380.39 and 26,325.58

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Solution

The fourth proportional to 78,916.15, 118,380.39 and 26,325.58 is: 39,490.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,916.15 : 118,380.39 = 26,325.58 : x
  2. Step 2: Convert to fraction form
    78,916.15/118,380.39 = 26,325.58/x
  3. Step 3: Cross multiply
    78,916.15x = 118,380.39 × 26,325.58
  4. Step 4: Simplify right side
    78,916.15x = 3,116,432,427.38
  5. Step 5: Solve for x
    x = 3,116,432,427.38/78,916.15
  6. Step 6: Final answer
    x = 39,490.43

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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.