Home / 66,065.12-99,084.72-19,307.08

Finding the Fourth Proportional to 66,065.12, 99,084.72 and 19,307.08

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Solution

The fourth proportional to 66,065.12, 99,084.72 and 19,307.08 is: 28,956.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,065.12 : 99,084.72 = 19,307.08 : x
  2. Step 2: Convert to fraction form
    66,065.12/99,084.72 = 19,307.08/x
  3. Step 3: Cross multiply
    66,065.12x = 99,084.72 × 19,307.08
  4. Step 4: Simplify right side
    66,065.12x = 1,913,036,615.82
  5. Step 5: Solve for x
    x = 1,913,036,615.82/66,065.12
  6. Step 6: Final answer
    x = 28,956.83

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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.