Home / 93,421.31-128,920.73-50,979.83

Finding the Fourth Proportional to 93,421.31, 128,920.73 and 50,979.83

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Solution

The fourth proportional to 93,421.31, 128,920.73 and 50,979.83 is: 70,351.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,421.31 : 128,920.73 = 50,979.83 : x
  2. Step 2: Convert to fraction form
    93,421.31/128,920.73 = 50,979.83/x
  3. Step 3: Cross multiply
    93,421.31x = 128,920.73 × 50,979.83
  4. Step 4: Simplify right side
    93,421.31x = 6,572,355,999.37
  5. Step 5: Solve for x
    x = 6,572,355,999.37/93,421.31
  6. Step 6: Final answer
    x = 70,351.79

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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.