Home / 78,913.95-108,787.97-48,678.89

Finding the Fourth Proportional to 78,913.95, 108,787.97 and 48,678.89

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Solution

The fourth proportional to 78,913.95, 108,787.97 and 48,678.89 is: 67,106.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,913.95 : 108,787.97 = 48,678.89 : x
  2. Step 2: Convert to fraction form
    78,913.95/108,787.97 = 48,678.89/x
  3. Step 3: Cross multiply
    78,913.95x = 108,787.97 × 48,678.89
  4. Step 4: Simplify right side
    78,913.95x = 5,295,676,837.62
  5. Step 5: Solve for x
    x = 5,295,676,837.62/78,913.95
  6. Step 6: Final answer
    x = 67,106.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.