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Finding the Fourth Proportional to 73,212.40, 109,818.60 and 43,663.60

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Solution

The fourth proportional to 73,212.40, 109,818.60 and 43,663.60 is: 65,495.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,212.40 : 109,818.60 = 43,663.60 : x
  2. Step 2: Convert to fraction form
    73,212.40/109,818.60 = 43,663.60/x
  3. Step 3: Cross multiply
    73,212.40x = 109,818.60 × 43,663.60
  4. Step 4: Simplify right side
    73,212.40x = 4,795,075,422.96
  5. Step 5: Solve for x
    x = 4,795,075,422.96/73,212.40
  6. Step 6: Final answer
    x = 65,495.40

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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.