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Finding the Fourth Proportional to 55,320.80, 82,924.50 and 21,995.78

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Solution

The fourth proportional to 55,320.80, 82,924.50 and 21,995.78 is: 32,971.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,320.80 : 82,924.50 = 21,995.78 : x
  2. Step 2: Convert to fraction form
    55,320.80/82,924.50 = 21,995.78/x
  3. Step 3: Cross multiply
    55,320.80x = 82,924.50 × 21,995.78
  4. Step 4: Simplify right side
    55,320.80x = 1,823,989,058.61
  5. Step 5: Solve for x
    x = 1,823,989,058.61/55,320.80
  6. Step 6: Final answer
    x = 32,971.13

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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.