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Finding the Fourth Proportional to 55,407.71, 83,122.52 and 20,347.67

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Solution

The fourth proportional to 55,407.71, 83,122.52 and 20,347.67 is: 30,525.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,407.71 : 83,122.52 = 20,347.67 : x
  2. Step 2: Convert to fraction form
    55,407.71/83,122.52 = 20,347.67/x
  3. Step 3: Cross multiply
    55,407.71x = 83,122.52 × 20,347.67
  4. Step 4: Simplify right side
    55,407.71x = 1,691,349,089.18
  5. Step 5: Solve for x
    x = 1,691,349,089.18/55,407.71
  6. Step 6: Final answer
    x = 30,525.52

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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.