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Finding the Fourth Proportional to 57,383.94, 79,189.53 and 31,543.08

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Solution

The fourth proportional to 57,383.94, 79,189.53 and 31,543.08 is: 43,529.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,383.94 : 79,189.53 = 31,543.08 : x
  2. Step 2: Convert to fraction form
    57,383.94/79,189.53 = 31,543.08/x
  3. Step 3: Cross multiply
    57,383.94x = 79,189.53 × 31,543.08
  4. Step 4: Simplify right side
    57,383.94x = 2,497,881,679.95
  5. Step 5: Solve for x
    x = 2,497,881,679.95/57,383.94
  6. Step 6: Final answer
    x = 43,529.28

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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.