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Finding the Fourth Proportional to 32,421.70, 48,632.55 and 20,748.10

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Solution

The fourth proportional to 32,421.70, 48,632.55 and 20,748.10 is: 31,122.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,421.70 : 48,632.55 = 20,748.10 : x
  2. Step 2: Convert to fraction form
    32,421.70/48,632.55 = 20,748.10/x
  3. Step 3: Cross multiply
    32,421.70x = 48,632.55 × 20,748.10
  4. Step 4: Simplify right side
    32,421.70x = 1,009,033,010.66
  5. Step 5: Solve for x
    x = 1,009,033,010.66/32,421.70
  6. Step 6: Final answer
    x = 31,122.15

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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.