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Finding the Fourth Proportional to 66,547.89, 91,851.66 and 43,890.96

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Solution

The fourth proportional to 66,547.89, 91,851.66 and 43,890.96 is: 60,579.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,547.89 : 91,851.66 = 43,890.96 : x
  2. Step 2: Convert to fraction form
    66,547.89/91,851.66 = 43,890.96/x
  3. Step 3: Cross multiply
    66,547.89x = 91,851.66 × 43,890.96
  4. Step 4: Simplify right side
    66,547.89x = 4,031,457,534.99
  5. Step 5: Solve for x
    x = 4,031,457,534.99/66,547.89
  6. Step 6: Final answer
    x = 60,579.80

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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.