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Finding the Fourth Proportional to 93,456.59, 128,970.04 and 51,015.11

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Solution

The fourth proportional to 93,456.59, 128,970.04 and 51,015.11 is: 70,400.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,456.59 : 128,970.04 = 51,015.11 : x
  2. Step 2: Convert to fraction form
    93,456.59/128,970.04 = 51,015.11/x
  3. Step 3: Cross multiply
    93,456.59x = 128,970.04 × 51,015.11
  4. Step 4: Simplify right side
    93,456.59x = 6,579,420,777.30
  5. Step 5: Solve for x
    x = 6,579,420,777.30/93,456.59
  6. Step 6: Final answer
    x = 70,400.82

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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.