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Finding the Fourth Proportional to 103,681.51, 155,514.96 and 40,489.76

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Solution

The fourth proportional to 103,681.51, 155,514.96 and 40,489.76 is: 60,731.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,681.51 : 155,514.96 = 40,489.76 : x
  2. Step 2: Convert to fraction form
    103,681.51/155,514.96 = 40,489.76/x
  3. Step 3: Cross multiply
    103,681.51x = 155,514.96 × 40,489.76
  4. Step 4: Simplify right side
    103,681.51x = 6,296,763,406.81
  5. Step 5: Solve for x
    x = 6,296,763,406.81/103,681.51
  6. Step 6: Final answer
    x = 60,731.79

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1.5x scale

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.