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Finding the Fourth Proportional to 93,415.50, 128,913.39 and 59,881.50

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Solution

The fourth proportional to 93,415.50, 128,913.39 and 59,881.50 is: 82,636.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,415.50 : 128,913.39 = 59,881.50 : x
  2. Step 2: Convert to fraction form
    93,415.50/128,913.39 = 59,881.50/x
  3. Step 3: Cross multiply
    93,415.50x = 128,913.39 × 59,881.50
  4. Step 4: Simplify right side
    93,415.50x = 7,719,527,163.29
  5. Step 5: Solve for x
    x = 7,719,527,163.29/93,415.50
  6. Step 6: Final answer
    x = 82,636.47

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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.