Home / 78,985.85-118,511.74-34,644.43

Finding the Fourth Proportional to 78,985.85, 118,511.74 and 34,644.43

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Solution

The fourth proportional to 78,985.85, 118,511.74 and 34,644.43 is: 51,981.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,985.85 : 118,511.74 = 34,644.43 : x
  2. Step 2: Convert to fraction form
    78,985.85/118,511.74 = 34,644.43/x
  3. Step 3: Cross multiply
    78,985.85x = 118,511.74 × 34,644.43
  4. Step 4: Simplify right side
    78,985.85x = 4,105,771,680.61
  5. Step 5: Solve for x
    x = 4,105,771,680.61/78,985.85
  6. Step 6: Final answer
    x = 51,981.10

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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.