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Finding the Fourth Proportional to 65,378.40, 97,873.20 and 39,069.60

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Solution

The fourth proportional to 65,378.40, 97,873.20 and 39,069.60 is: 58,488.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,378.40 : 97,873.20 = 39,069.60 : x
  2. Step 2: Convert to fraction form
    65,378.40/97,873.20 = 39,069.60/x
  3. Step 3: Cross multiply
    65,378.40x = 97,873.20 × 39,069.60
  4. Step 4: Simplify right side
    65,378.40x = 3,823,866,774.72
  5. Step 5: Solve for x
    x = 3,823,866,774.72/65,378.40
  6. Step 6: Final answer
    x = 58,488.23

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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.