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Finding the Fourth Proportional to 93,214.74, 128,636.61 and 55,488.66

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Solution

The fourth proportional to 93,214.74, 128,636.61 and 55,488.66 is: 76,574.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,214.74 : 128,636.61 = 55,488.66 : x
  2. Step 2: Convert to fraction form
    93,214.74/128,636.61 = 55,488.66/x
  3. Step 3: Cross multiply
    93,214.74x = 128,636.61 × 55,488.66
  4. Step 4: Simplify right side
    93,214.74x = 7,137,873,115.84
  5. Step 5: Solve for x
    x = 7,137,873,115.84/93,214.74
  6. Step 6: Final answer
    x = 76,574.51

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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.