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Finding the Fourth Proportional to 79,876.53, 110,127.30 and 65,484.25

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Solution

The fourth proportional to 79,876.53, 110,127.30 and 65,484.25 is: 90,284.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,876.53 : 110,127.30 = 65,484.25 : x
  2. Step 2: Convert to fraction form
    79,876.53/110,127.30 = 65,484.25/x
  3. Step 3: Cross multiply
    79,876.53x = 110,127.30 × 65,484.25
  4. Step 4: Simplify right side
    79,876.53x = 7,211,603,124.14
  5. Step 5: Solve for x
    x = 7,211,603,124.14/79,876.53
  6. Step 6: Final answer
    x = 90,284.38

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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.