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Finding the Fourth Proportional to 69,984.18, 96,579 and 38,152.80

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Solution

The fourth proportional to 69,984.18, 96,579 and 38,152.80 is: 52,651.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,984.18 : 96,579 = 38,152.80 : x
  2. Step 2: Convert to fraction form
    69,984.18/96,579 = 38,152.80/x
  3. Step 3: Cross multiply
    69,984.18x = 96,579 × 38,152.80
  4. Step 4: Simplify right side
    69,984.18x = 3,684,759,271.20
  5. Step 5: Solve for x
    x = 3,684,759,271.20/69,984.18
  6. Step 6: Final answer
    x = 52,651.32

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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.