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Finding the Fourth Proportional to 56,555.84, 84,833.76 and 21,487.20

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Solution

The fourth proportional to 56,555.84, 84,833.76 and 21,487.20 is: 32,230.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,555.84 : 84,833.76 = 21,487.20 : x
  2. Step 2: Convert to fraction form
    56,555.84/84,833.76 = 21,487.20/x
  3. Step 3: Cross multiply
    56,555.84x = 84,833.76 × 21,487.20
  4. Step 4: Simplify right side
    56,555.84x = 1,822,839,967.87
  5. Step 5: Solve for x
    x = 1,822,839,967.87/56,555.84
  6. Step 6: Final answer
    x = 32,230.80

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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.