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Finding the Fourth Proportional to 97,078.70, 133,942.43 and 56,802.39

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Solution

The fourth proportional to 97,078.70, 133,942.43 and 56,802.39 is: 78,371.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,078.70 : 133,942.43 = 56,802.39 : x
  2. Step 2: Convert to fraction form
    97,078.70/133,942.43 = 56,802.39/x
  3. Step 3: Cross multiply
    97,078.70x = 133,942.43 × 56,802.39
  4. Step 4: Simplify right side
    97,078.70x = 7,608,250,146.41
  5. Step 5: Solve for x
    x = 7,608,250,146.41/97,078.70
  6. Step 6: Final answer
    x = 78,371.98

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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.