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Finding the Fourth Proportional to 73,643.80, 110,465.70 and 40,466.20

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Solution

The fourth proportional to 73,643.80, 110,465.70 and 40,466.20 is: 60,699.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,643.80 : 110,465.70 = 40,466.20 : x
  2. Step 2: Convert to fraction form
    73,643.80/110,465.70 = 40,466.20/x
  3. Step 3: Cross multiply
    73,643.80x = 110,465.70 × 40,466.20
  4. Step 4: Simplify right side
    73,643.80x = 4,470,127,109.34
  5. Step 5: Solve for x
    x = 4,470,127,109.34/73,643.80
  6. Step 6: Final answer
    x = 60,699.30

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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.