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Finding the Fourth Proportional to 64,423.88, 96,645.03 and 20,055.12

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Solution

The fourth proportional to 64,423.88, 96,645.03 and 20,055.12 is: 30,085.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,423.88 : 96,645.03 = 20,055.12 : x
  2. Step 2: Convert to fraction form
    64,423.88/96,645.03 = 20,055.12/x
  3. Step 3: Cross multiply
    64,423.88x = 96,645.03 × 20,055.12
  4. Step 4: Simplify right side
    64,423.88x = 1,938,227,674.05
  5. Step 5: Solve for x
    x = 1,938,227,674.05/64,423.88
  6. Step 6: Final answer
    x = 30,085.55

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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.