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Finding the Fourth Proportional to 55,526.76, 83,322.72 and 20,490.84

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Solution

The fourth proportional to 55,526.76, 83,322.72 and 20,490.84 is: 30,748.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,526.76 : 83,322.72 = 20,490.84 : x
  2. Step 2: Convert to fraction form
    55,526.76/83,322.72 = 20,490.84/x
  3. Step 3: Cross multiply
    55,526.76x = 83,322.72 × 20,490.84
  4. Step 4: Simplify right side
    55,526.76x = 1,707,352,523.88
  5. Step 5: Solve for x
    x = 1,707,352,523.88/55,526.76
  6. Step 6: Final answer
    x = 30,748.28

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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.