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Finding the Fourth Proportional to 53,220.60, 73,447.80 and 30,566.80

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Solution

The fourth proportional to 53,220.60, 73,447.80 and 30,566.80 is: 42,184.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,220.60 : 73,447.80 = 30,566.80 : x
  2. Step 2: Convert to fraction form
    53,220.60/73,447.80 = 30,566.80/x
  3. Step 3: Cross multiply
    53,220.60x = 73,447.80 × 30,566.80
  4. Step 4: Simplify right side
    53,220.60x = 2,245,064,213.04
  5. Step 5: Solve for x
    x = 2,245,064,213.04/53,220.60
  6. Step 6: Final answer
    x = 42,184.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.