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Finding the Fourth Proportional to 64,889.40, 89,548.02 and 38,047.80

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Solution

The fourth proportional to 64,889.40, 89,548.02 and 38,047.80 is: 52,506.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,889.40 : 89,548.02 = 38,047.80 : x
  2. Step 2: Convert to fraction form
    64,889.40/89,548.02 = 38,047.80/x
  3. Step 3: Cross multiply
    64,889.40x = 89,548.02 × 38,047.80
  4. Step 4: Simplify right side
    64,889.40x = 3,407,105,155.36
  5. Step 5: Solve for x
    x = 3,407,105,155.36/64,889.40
  6. Step 6: Final answer
    x = 52,506.34

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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.