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Finding the Fourth Proportional to 78,719.16, 118,053.10 and 26,114.52

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Solution

The fourth proportional to 78,719.16, 118,053.10 and 26,114.52 is: 39,163.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,719.16 : 118,053.10 = 26,114.52 : x
  2. Step 2: Convert to fraction form
    78,719.16/118,053.10 = 26,114.52/x
  3. Step 3: Cross multiply
    78,719.16x = 118,053.10 × 26,114.52
  4. Step 4: Simplify right side
    78,719.16x = 3,082,900,041.01
  5. Step 5: Solve for x
    x = 3,082,900,041.01/78,719.16
  6. Step 6: Final answer
    x = 39,163.27

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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.