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Finding the Fourth Proportional to 85,008, 127,484.43 and 28,069.10

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Solution

The fourth proportional to 85,008, 127,484.43 and 28,069.10 is: 42,094.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,008 : 127,484.43 = 28,069.10 : x
  2. Step 2: Convert to fraction form
    85,008/127,484.43 = 28,069.10/x
  3. Step 3: Cross multiply
    85,008x = 127,484.43 × 28,069.10
  4. Step 4: Simplify right side
    85,008x = 3,578,373,214.11
  5. Step 5: Solve for x
    x = 3,578,373,214.11/85,008
  6. Step 6: Final answer
    x = 42,094.55

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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.