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Finding the Fourth Proportional to 93,454.48, 128,967.60 and 51,013.90

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Solution

The fourth proportional to 93,454.48, 128,967.60 and 51,013.90 is: 70,399.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,454.48 : 128,967.60 = 51,013.90 : x
  2. Step 2: Convert to fraction form
    93,454.48/128,967.60 = 51,013.90/x
  3. Step 3: Cross multiply
    93,454.48x = 128,967.60 × 51,013.90
  4. Step 4: Simplify right side
    93,454.48x = 6,579,140,249.64
  5. Step 5: Solve for x
    x = 6,579,140,249.64/93,454.48
  6. Step 6: Final answer
    x = 70,399.41

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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.