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Finding the Fourth Proportional to 70,787.60, 97,683.34 and 38,955.68

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Solution

The fourth proportional to 70,787.60, 97,683.34 and 38,955.68 is: 53,756.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,787.60 : 97,683.34 = 38,955.68 : x
  2. Step 2: Convert to fraction form
    70,787.60/97,683.34 = 38,955.68/x
  3. Step 3: Cross multiply
    70,787.60x = 97,683.34 × 38,955.68
  4. Step 4: Simplify right side
    70,787.60x = 3,805,320,934.37
  5. Step 5: Solve for x
    x = 3,805,320,934.37/70,787.60
  6. Step 6: Final answer
    x = 53,756.89

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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.