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Finding the Fourth Proportional to 78,955.58, 117,996.72 and 70,732.46

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Solution

The fourth proportional to 78,955.58, 117,996.72 and 70,732.46 is: 105,707.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,955.58 : 117,996.72 = 70,732.46 : x
  2. Step 2: Convert to fraction form
    78,955.58/117,996.72 = 70,732.46/x
  3. Step 3: Cross multiply
    78,955.58x = 117,996.72 × 70,732.46
  4. Step 4: Simplify right side
    78,955.58x = 8,346,198,277.53
  5. Step 5: Solve for x
    x = 8,346,198,277.53/78,955.58
  6. Step 6: Final answer
    x = 105,707.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.