Home / 93,269.28-128,673.06-64,991.40

Finding the Fourth Proportional to 93,269.28, 128,673.06 and 64,991.40

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Solution

The fourth proportional to 93,269.28, 128,673.06 and 64,991.40 is: 89,661.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,269.28 : 128,673.06 = 64,991.40 : x
  2. Step 2: Convert to fraction form
    93,269.28/128,673.06 = 64,991.40/x
  3. Step 3: Cross multiply
    93,269.28x = 128,673.06 × 64,991.40
  4. Step 4: Simplify right side
    93,269.28x = 8,362,642,311.68
  5. Step 5: Solve for x
    x = 8,362,642,311.68/93,269.28
  6. Step 6: Final answer
    x = 89,661.27

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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.