Home / 78,910.02-118,371.04-26,319.56

Finding the Fourth Proportional to 78,910.02, 118,371.04 and 26,319.56

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Solution

The fourth proportional to 78,910.02, 118,371.04 and 26,319.56 is: 39,481.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,910.02 : 118,371.04 = 26,319.56 : x
  2. Step 2: Convert to fraction form
    78,910.02/118,371.04 = 26,319.56/x
  3. Step 3: Cross multiply
    78,910.02x = 118,371.04 × 26,319.56
  4. Step 4: Simplify right side
    78,910.02x = 3,115,473,031.89
  5. Step 5: Solve for x
    x = 3,115,473,031.89/78,910.02
  6. Step 6: Final answer
    x = 39,481.34

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1.5x scale

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.