Home / 78,837.02-118,192.74-45,519.29

Finding the Fourth Proportional to 78,837.02, 118,192.74 and 45,519.29

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Solution

The fourth proportional to 78,837.02, 118,192.74 and 45,519.29 is: 68,242.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,837.02 : 118,192.74 = 45,519.29 : x
  2. Step 2: Convert to fraction form
    78,837.02/118,192.74 = 45,519.29/x
  3. Step 3: Cross multiply
    78,837.02x = 118,192.74 × 45,519.29
  4. Step 4: Simplify right side
    78,837.02x = 5,380,049,607.95
  5. Step 5: Solve for x
    x = 5,380,049,607.95/78,837.02
  6. Step 6: Final answer
    x = 68,242.68

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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.