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Finding the Fourth Proportional to 71,612.95, 107,424.89 and 21,697.18

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Solution

The fourth proportional to 71,612.95, 107,424.89 and 21,697.18 is: 32,547.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,612.95 : 107,424.89 = 21,697.18 : x
  2. Step 2: Convert to fraction form
    71,612.95/107,424.89 = 21,697.18/x
  3. Step 3: Cross multiply
    71,612.95x = 107,424.89 × 21,697.18
  4. Step 4: Simplify right side
    71,612.95x = 2,330,817,174.81
  5. Step 5: Solve for x
    x = 2,330,817,174.81/71,612.95
  6. Step 6: Final answer
    x = 32,547.43

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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.