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Finding the Fourth Proportional to 93,345.38, 128,826.35 and 57,534.47

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Solution

The fourth proportional to 93,345.38, 128,826.35 and 57,534.47 is: 79,403.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,345.38 : 128,826.35 = 57,534.47 : x
  2. Step 2: Convert to fraction form
    93,345.38/128,826.35 = 57,534.47/x
  3. Step 3: Cross multiply
    93,345.38x = 128,826.35 × 57,534.47
  4. Step 4: Simplify right side
    93,345.38x = 7,411,954,837.48
  5. Step 5: Solve for x
    x = 7,411,954,837.48/93,345.38
  6. Step 6: Final answer
    x = 79,403.56

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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.