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Finding the Fourth Proportional to 65,624.40, 98,436.60 and 39,315.60

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Solution

The fourth proportional to 65,624.40, 98,436.60 and 39,315.60 is: 58,973.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,624.40 : 98,436.60 = 39,315.60 : x
  2. Step 2: Convert to fraction form
    65,624.40/98,436.60 = 39,315.60/x
  3. Step 3: Cross multiply
    65,624.40x = 98,436.60 × 39,315.60
  4. Step 4: Simplify right side
    65,624.40x = 3,870,093,990.96
  5. Step 5: Solve for x
    x = 3,870,093,990.96/65,624.40
  6. Step 6: Final answer
    x = 58,973.40

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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.