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Finding the Fourth Proportional to 64,868.40, 89,519.04 and 38,026.80

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Solution

The fourth proportional to 64,868.40, 89,519.04 and 38,026.80 is: 52,477.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,868.40 : 89,519.04 = 38,026.80 : x
  2. Step 2: Convert to fraction form
    64,868.40/89,519.04 = 38,026.80/x
  3. Step 3: Cross multiply
    64,868.40x = 89,519.04 × 38,026.80
  4. Step 4: Simplify right side
    64,868.40x = 3,404,122,630.27
  5. Step 5: Solve for x
    x = 3,404,122,630.27/64,868.40
  6. Step 6: Final answer
    x = 52,477.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.