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Finding the Fourth Proportional to 76,279.40, 114,419.10 and 71,095.40

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Solution

The fourth proportional to 76,279.40, 114,419.10 and 71,095.40 is: 106,643.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,279.40 : 114,419.10 = 71,095.40 : x
  2. Step 2: Convert to fraction form
    76,279.40/114,419.10 = 71,095.40/x
  3. Step 3: Cross multiply
    76,279.40x = 114,419.10 × 71,095.40
  4. Step 4: Simplify right side
    76,279.40x = 8,134,671,682.14
  5. Step 5: Solve for x
    x = 8,134,671,682.14/76,279.40
  6. Step 6: Final answer
    x = 106,643.10

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1.5x scale

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.