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Finding the Fourth Proportional to 93,379.71, 128,985.55 and 75,542.00

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Solution

The fourth proportional to 93,379.71, 128,985.55 and 75,542.00 is: 104,346.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,379.71 : 128,985.55 = 75,542.00 : x
  2. Step 2: Convert to fraction form
    93,379.71/128,985.55 = 75,542.00/x
  3. Step 3: Cross multiply
    93,379.71x = 128,985.55 × 75,542.00
  4. Step 4: Simplify right side
    93,379.71x = 9,743,825,584.32
  5. Step 5: Solve for x
    x = 9,743,825,584.32/93,379.71
  6. Step 6: Final answer
    x = 104,346.28

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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.