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Finding the Fourth Proportional to 93,131.95, 128,524.86 and 57,342.60

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Solution

The fourth proportional to 93,131.95, 128,524.86 and 57,342.60 is: 79,134.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,131.95 : 128,524.86 = 57,342.60 : x
  2. Step 2: Convert to fraction form
    93,131.95/128,524.86 = 57,342.60/x
  3. Step 3: Cross multiply
    93,131.95x = 128,524.86 × 57,342.60
  4. Step 4: Simplify right side
    93,131.95x = 7,369,949,637.04
  5. Step 5: Solve for x
    x = 7,369,949,637.04/93,131.95
  6. Step 6: Final answer
    x = 79,134.49

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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.