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Finding the Fourth Proportional to 62,987.81, 94,486.73 and 20,866.19

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Solution

The fourth proportional to 62,987.81, 94,486.73 and 20,866.19 is: 31,300.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,987.81 : 94,486.73 = 20,866.19 : x
  2. Step 2: Convert to fraction form
    62,987.81/94,486.73 = 20,866.19/x
  3. Step 3: Cross multiply
    62,987.81x = 94,486.73 × 20,866.19
  4. Step 4: Simplify right side
    62,987.81x = 1,971,577,483.89
  5. Step 5: Solve for x
    x = 1,971,577,483.89/62,987.81
  6. Step 6: Final answer
    x = 31,300.94

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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.