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Finding the Fourth Proportional to 66,547.53, 99,835.64 and 19,162.30

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Solution

The fourth proportional to 66,547.53, 99,835.64 and 19,162.30 is: 28,747.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,547.53 : 99,835.64 = 19,162.30 : x
  2. Step 2: Convert to fraction form
    66,547.53/99,835.64 = 19,162.30/x
  3. Step 3: Cross multiply
    66,547.53x = 99,835.64 × 19,162.30
  4. Step 4: Simplify right side
    66,547.53x = 1,913,080,505.81
  5. Step 5: Solve for x
    x = 1,913,080,505.81/66,547.53
  6. Step 6: Final answer
    x = 28,747.58

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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.