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Finding the Fourth Proportional to 48,645.40, 72,962.70 and 13,588.60

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Solution

The fourth proportional to 48,645.40, 72,962.70 and 13,588.60 is: 20,381.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,645.40 : 72,962.70 = 13,588.60 : x
  2. Step 2: Convert to fraction form
    48,645.40/72,962.70 = 13,588.60/x
  3. Step 3: Cross multiply
    48,645.40x = 72,962.70 × 13,588.60
  4. Step 4: Simplify right side
    48,645.40x = 991,460,945.22
  5. Step 5: Solve for x
    x = 991,460,945.22/48,645.40
  6. Step 6: Final answer
    x = 20,381.39

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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.