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Finding the Fourth Proportional to 71,329.17, 107,011.50 and 21,410.19

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Solution

The fourth proportional to 71,329.17, 107,011.50 and 21,410.19 is: 32,120.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,329.17 : 107,011.50 = 21,410.19 : x
  2. Step 2: Convert to fraction form
    71,329.17/107,011.50 = 21,410.19/x
  3. Step 3: Cross multiply
    71,329.17x = 107,011.50 × 21,410.19
  4. Step 4: Simplify right side
    71,329.17x = 2,291,136,547.19
  5. Step 5: Solve for x
    x = 2,291,136,547.19/71,329.17
  6. Step 6: Final answer
    x = 32,120.61

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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.