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Finding the Fourth Proportional to 43,430.40, 65,284.80 and 40,348.80

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Solution

The fourth proportional to 43,430.40, 65,284.80 and 40,348.80 is: 60,652.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,430.40 : 65,284.80 = 40,348.80 : x
  2. Step 2: Convert to fraction form
    43,430.40/65,284.80 = 40,348.80/x
  3. Step 3: Cross multiply
    43,430.40x = 65,284.80 × 40,348.80
  4. Step 4: Simplify right side
    43,430.40x = 2,634,163,338.24
  5. Step 5: Solve for x
    x = 2,634,163,338.24/43,430.40
  6. Step 6: Final answer
    x = 60,652.52

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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.