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Finding the Fourth Proportional to 79,775.54, 110,070.91 and 45,312.60

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Solution

The fourth proportional to 79,775.54, 110,070.91 and 45,312.60 is: 62,520.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,775.54 : 110,070.91 = 45,312.60 : x
  2. Step 2: Convert to fraction form
    79,775.54/110,070.91 = 45,312.60/x
  3. Step 3: Cross multiply
    79,775.54x = 110,070.91 × 45,312.60
  4. Step 4: Simplify right side
    79,775.54x = 4,987,599,116.47
  5. Step 5: Solve for x
    x = 4,987,599,116.47/79,775.54
  6. Step 6: Final answer
    x = 62,520.41

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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.