Home / 66,459.81-99,672.69-19,701.75

Finding the Fourth Proportional to 66,459.81, 99,672.69 and 19,701.75

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Solution

The fourth proportional to 66,459.81, 99,672.69 and 19,701.75 is: 29,547.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,459.81 : 99,672.69 = 19,701.75 : x
  2. Step 2: Convert to fraction form
    66,459.81/99,672.69 = 19,701.75/x
  3. Step 3: Cross multiply
    66,459.81x = 99,672.69 × 19,701.75
  4. Step 4: Simplify right side
    66,459.81x = 1,963,726,420.21
  5. Step 5: Solve for x
    x = 1,963,726,420.21/66,459.81
  6. Step 6: Final answer
    x = 29,547.58

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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.