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Finding the Fourth Proportional to 76,051.36, 104,945.04 and 42,512.80

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Solution

The fourth proportional to 76,051.36, 104,945.04 and 42,512.80 is: 58,664.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,051.36 : 104,945.04 = 42,512.80 : x
  2. Step 2: Convert to fraction form
    76,051.36/104,945.04 = 42,512.80/x
  3. Step 3: Cross multiply
    76,051.36x = 104,945.04 × 42,512.80
  4. Step 4: Simplify right side
    76,051.36x = 4,461,507,496.51
  5. Step 5: Solve for x
    x = 4,461,507,496.51/76,051.36
  6. Step 6: Final answer
    x = 58,664.40

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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.