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Finding the Fourth Proportional to 76,995.25, 106,242.93 and 42,999.40

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Solution

The fourth proportional to 76,995.25, 106,242.93 and 42,999.40 is: 59,333.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,995.25 : 106,242.93 = 42,999.40 : x
  2. Step 2: Convert to fraction form
    76,995.25/106,242.93 = 42,999.40/x
  3. Step 3: Cross multiply
    76,995.25x = 106,242.93 × 42,999.40
  4. Step 4: Simplify right side
    76,995.25x = 4,568,382,244.24
  5. Step 5: Solve for x
    x = 4,568,382,244.24/76,995.25
  6. Step 6: Final answer
    x = 59,333.30

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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.