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Finding the Fourth Proportional to 57,159.84, 78,893.70 and 38,040.42

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Solution

The fourth proportional to 57,159.84, 78,893.70 and 38,040.42 is: 52,504.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,159.84 : 78,893.70 = 38,040.42 : x
  2. Step 2: Convert to fraction form
    57,159.84/78,893.70 = 38,040.42/x
  3. Step 3: Cross multiply
    57,159.84x = 78,893.70 × 38,040.42
  4. Step 4: Simplify right side
    57,159.84x = 3,001,149,483.35
  5. Step 5: Solve for x
    x = 3,001,149,483.35/57,159.84
  6. Step 6: Final answer
    x = 52,504.51

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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.