Home / 68,102.64-93,981.60-39,808.32

Finding the Fourth Proportional to 68,102.64, 93,981.60 and 39,808.32

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Solution

The fourth proportional to 68,102.64, 93,981.60 and 39,808.32 is: 54,935.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,102.64 : 93,981.60 = 39,808.32 : x
  2. Step 2: Convert to fraction form
    68,102.64/93,981.60 = 39,808.32/x
  3. Step 3: Cross multiply
    68,102.64x = 93,981.60 × 39,808.32
  4. Step 4: Simplify right side
    68,102.64x = 3,741,249,606.91
  5. Step 5: Solve for x
    x = 3,741,249,606.91/68,102.64
  6. Step 6: Final answer
    x = 54,935.46

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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.