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Finding the Fourth Proportional to 93,312.38, 128,771.98 and 50,871.76

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Solution

The fourth proportional to 93,312.38, 128,771.98 and 50,871.76 is: 70,203.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,312.38 : 128,771.98 = 50,871.76 : x
  2. Step 2: Convert to fraction form
    93,312.38/128,771.98 = 50,871.76/x
  3. Step 3: Cross multiply
    93,312.38x = 128,771.98 × 50,871.76
  4. Step 4: Simplify right side
    93,312.38x = 6,550,857,261.28
  5. Step 5: Solve for x
    x = 6,550,857,261.28/93,312.38
  6. Step 6: Final answer
    x = 70,203.52

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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.