Home / 71,830.40-99,126.14-40,005.63

Finding the Fourth Proportional to 71,830.40, 99,126.14 and 40,005.63

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Solution

The fourth proportional to 71,830.40, 99,126.14 and 40,005.63 is: 55,207.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,830.40 : 99,126.14 = 40,005.63 : x
  2. Step 2: Convert to fraction form
    71,830.40/99,126.14 = 40,005.63/x
  3. Step 3: Cross multiply
    71,830.40x = 99,126.14 × 40,005.63
  4. Step 4: Simplify right side
    71,830.40x = 3,965,603,480.14
  5. Step 5: Solve for x
    x = 3,965,603,480.14/71,830.40
  6. Step 6: Final answer
    x = 55,207.88

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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.