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Finding the Fourth Proportional to 64,012.40, 96,025.80 and 19,638.80

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Solution

The fourth proportional to 64,012.40, 96,025.80 and 19,638.80 is: 29,460.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,012.40 : 96,025.80 = 19,638.80 : x
  2. Step 2: Convert to fraction form
    64,012.40/96,025.80 = 19,638.80/x
  3. Step 3: Cross multiply
    64,012.40x = 96,025.80 × 19,638.80
  4. Step 4: Simplify right side
    64,012.40x = 1,885,831,481.04
  5. Step 5: Solve for x
    x = 1,885,831,481.04/64,012.40
  6. Step 6: Final answer
    x = 29,460.41

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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.