Home / 64,878.18-89,516.58-39,383.90

Finding the Fourth Proportional to 64,878.18, 89,516.58 and 39,383.90

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Solution

The fourth proportional to 64,878.18, 89,516.58 and 39,383.90 is: 54,340.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,878.18 : 89,516.58 = 39,383.90 : x
  2. Step 2: Convert to fraction form
    64,878.18/89,516.58 = 39,383.90/x
  3. Step 3: Cross multiply
    64,878.18x = 89,516.58 × 39,383.90
  4. Step 4: Simplify right side
    64,878.18x = 3,525,512,035.06
  5. Step 5: Solve for x
    x = 3,525,512,035.06/64,878.18
  6. Step 6: Final answer
    x = 54,340.49

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1.5x scale

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.