Home / 66,690.18-99,865.98-40,019.40

Finding the Fourth Proportional to 66,690.18, 99,865.98 and 40,019.40

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Solution

The fourth proportional to 66,690.18, 99,865.98 and 40,019.40 is: 59,927.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,690.18 : 99,865.98 = 40,019.40 : x
  2. Step 2: Convert to fraction form
    66,690.18/99,865.98 = 40,019.40/x
  3. Step 3: Cross multiply
    66,690.18x = 99,865.98 × 40,019.40
  4. Step 4: Simplify right side
    66,690.18x = 3,996,576,600.01
  5. Step 5: Solve for x
    x = 3,996,576,600.01/66,690.18
  6. Step 6: Final answer
    x = 59,927.51

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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.