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Finding the Fourth Proportional to 93,051, 128,355.66 and 55,323

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Solution

The fourth proportional to 93,051, 128,355.66 and 55,323 is: 76,313.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,051 : 128,355.66 = 55,323 : x
  2. Step 2: Convert to fraction form
    93,051/128,355.66 = 55,323/x
  3. Step 3: Cross multiply
    93,051x = 128,355.66 × 55,323
  4. Step 4: Simplify right side
    93,051x = 7,101,020,178.18
  5. Step 5: Solve for x
    x = 7,101,020,178.18/93,051
  6. Step 6: Final answer
    x = 76,313.21

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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.