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Finding the Fourth Proportional to 78,814.68, 118,239.84 and 26,226.24

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Solution

The fourth proportional to 78,814.68, 118,239.84 and 26,226.24 is: 39,345.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,814.68 : 118,239.84 = 26,226.24 : x
  2. Step 2: Convert to fraction form
    78,814.68/118,239.84 = 26,226.24/x
  3. Step 3: Cross multiply
    78,814.68x = 118,239.84 × 26,226.24
  4. Step 4: Simplify right side
    78,814.68x = 3,100,986,421.40
  5. Step 5: Solve for x
    x = 3,100,986,421.40/78,814.68
  6. Step 6: Final answer
    x = 39,345.29

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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.