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Finding the Fourth Proportional to 79,520.54, 119,280.74 and 20,356.11

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Solution

The fourth proportional to 79,520.54, 119,280.74 and 20,356.11 is: 30,534.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,520.54 : 119,280.74 = 20,356.11 : x
  2. Step 2: Convert to fraction form
    79,520.54/119,280.74 = 20,356.11/x
  3. Step 3: Cross multiply
    79,520.54x = 119,280.74 × 20,356.11
  4. Step 4: Simplify right side
    79,520.54x = 2,428,091,762.54
  5. Step 5: Solve for x
    x = 2,428,091,762.54/79,520.54
  6. Step 6: Final answer
    x = 30,534.15

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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.