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Finding the Fourth Proportional to 43,482.40, 65,362.80 and 40,400.80

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Solution

The fourth proportional to 43,482.40, 65,362.80 and 40,400.80 is: 60,730.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,482.40 : 65,362.80 = 40,400.80 : x
  2. Step 2: Convert to fraction form
    43,482.40/65,362.80 = 40,400.80/x
  3. Step 3: Cross multiply
    43,482.40x = 65,362.80 × 40,400.80
  4. Step 4: Simplify right side
    43,482.40x = 2,640,709,410.24
  5. Step 5: Solve for x
    x = 2,640,709,410.24/43,482.40
  6. Step 6: Final answer
    x = 60,730.53

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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.