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Finding the Fourth Proportional to 34,239.60, 51,445.80 and 21,765.60

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Solution

The fourth proportional to 34,239.60, 51,445.80 and 21,765.60 is: 32,703.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,239.60 : 51,445.80 = 21,765.60 : x
  2. Step 2: Convert to fraction form
    34,239.60/51,445.80 = 21,765.60/x
  3. Step 3: Cross multiply
    34,239.60x = 51,445.80 × 21,765.60
  4. Step 4: Simplify right side
    34,239.60x = 1,119,748,704.48
  5. Step 5: Solve for x
    x = 1,119,748,704.48/34,239.60
  6. Step 6: Final answer
    x = 32,703.32

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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.