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Finding the Fourth Proportional to 93,154, 128,562.24 and 52,878.64

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Solution

The fourth proportional to 93,154, 128,562.24 and 52,878.64 is: 72,978.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,154 : 128,562.24 = 52,878.64 : x
  2. Step 2: Convert to fraction form
    93,154/128,562.24 = 52,878.64/x
  3. Step 3: Cross multiply
    93,154x = 128,562.24 × 52,878.64
  4. Step 4: Simplify right side
    93,154x = 6,798,196,406.55
  5. Step 5: Solve for x
    x = 6,798,196,406.55/93,154
  6. Step 6: Final answer
    x = 72,978.04

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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.