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Finding the Fourth Proportional to 73,570.65, 110,356.99 and 20,980.12

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Solution

The fourth proportional to 73,570.65, 110,356.99 and 20,980.12 is: 31,470.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,570.65 : 110,356.99 = 20,980.12 : x
  2. Step 2: Convert to fraction form
    73,570.65/110,356.99 = 20,980.12/x
  3. Step 3: Cross multiply
    73,570.65x = 110,356.99 × 20,980.12
  4. Step 4: Simplify right side
    73,570.65x = 2,315,302,893.04
  5. Step 5: Solve for x
    x = 2,315,302,893.04/73,570.65
  6. Step 6: Final answer
    x = 31,470.47

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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.