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Finding the Fourth Proportional to 30,362.40, 45,543.60 and 27,640.80

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Solution

The fourth proportional to 30,362.40, 45,543.60 and 27,640.80 is: 41,461.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,362.40 : 45,543.60 = 27,640.80 : x
  2. Step 2: Convert to fraction form
    30,362.40/45,543.60 = 27,640.80/x
  3. Step 3: Cross multiply
    30,362.40x = 45,543.60 × 27,640.80
  4. Step 4: Simplify right side
    30,362.40x = 1,258,861,538.88
  5. Step 5: Solve for x
    x = 1,258,861,538.88/30,362.40
  6. Step 6: Final answer
    x = 41,461.20

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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.