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Finding the Fourth Proportional to 65,219.80, 97,829.70 and 38,954.20

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Solution

The fourth proportional to 65,219.80, 97,829.70 and 38,954.20 is: 58,431.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,219.80 : 97,829.70 = 38,954.20 : x
  2. Step 2: Convert to fraction form
    65,219.80/97,829.70 = 38,954.20/x
  3. Step 3: Cross multiply
    65,219.80x = 97,829.70 × 38,954.20
  4. Step 4: Simplify right side
    65,219.80x = 3,810,877,699.74
  5. Step 5: Solve for x
    x = 3,810,877,699.74/65,219.80
  6. Step 6: Final answer
    x = 58,431.30

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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.