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Finding the Fourth Proportional to 93,347.34, 128,821.86 and 57,054.66

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Solution

The fourth proportional to 93,347.34, 128,821.86 and 57,054.66 is: 78,736.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,347.34 : 128,821.86 = 57,054.66 : x
  2. Step 2: Convert to fraction form
    93,347.34/128,821.86 = 57,054.66/x
  3. Step 3: Cross multiply
    93,347.34x = 128,821.86 × 57,054.66
  4. Step 4: Simplify right side
    93,347.34x = 7,349,887,422.87
  5. Step 5: Solve for x
    x = 7,349,887,422.87/93,347.34
  6. Step 6: Final answer
    x = 78,736.98

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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.