Home / 66,289.05-99,383.87-39,987.63

Finding the Fourth Proportional to 66,289.05, 99,383.87 and 39,987.63

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Solution

The fourth proportional to 66,289.05, 99,383.87 and 39,987.63 is: 59,951.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,289.05 : 99,383.87 = 39,987.63 : x
  2. Step 2: Convert to fraction form
    66,289.05/99,383.87 = 39,987.63/x
  3. Step 3: Cross multiply
    66,289.05x = 99,383.87 × 39,987.63
  4. Step 4: Simplify right side
    66,289.05x = 3,974,125,521.50
  5. Step 5: Solve for x
    x = 3,974,125,521.50/66,289.05
  6. Step 6: Final answer
    x = 59,951.46

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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.