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Finding the Fourth Proportional to 65,015.40, 97,328.70 and 38,706.60

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Solution

The fourth proportional to 65,015.40, 97,328.70 and 38,706.60 is: 57,944.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,015.40 : 97,328.70 = 38,706.60 : x
  2. Step 2: Convert to fraction form
    65,015.40/97,328.70 = 38,706.60/x
  3. Step 3: Cross multiply
    65,015.40x = 97,328.70 × 38,706.60
  4. Step 4: Simplify right side
    65,015.40x = 3,767,263,059.42
  5. Step 5: Solve for x
    x = 3,767,263,059.42/65,015.40
  6. Step 6: Final answer
    x = 57,944.16

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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.