Home / 39,859.58-59,678.64-20,078.16

Finding the Fourth Proportional to 39,859.58, 59,678.64 and 20,078.16

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Solution

The fourth proportional to 39,859.58, 59,678.64 and 20,078.16 is: 30,061.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,859.58 : 59,678.64 = 20,078.16 : x
  2. Step 2: Convert to fraction form
    39,859.58/59,678.64 = 20,078.16/x
  3. Step 3: Cross multiply
    39,859.58x = 59,678.64 × 20,078.16
  4. Step 4: Simplify right side
    39,859.58x = 1,198,237,282.50
  5. Step 5: Solve for x
    x = 1,198,237,282.50/39,859.58
  6. Step 6: Final answer
    x = 30,061.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.