Home / 103,681.12-155,429.04-40,486.54

Finding the Fourth Proportional to 103,681.12, 155,429.04 and 40,486.54

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Solution

The fourth proportional to 103,681.12, 155,429.04 and 40,486.54 is: 60,693.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,681.12 : 155,429.04 = 40,486.54 : x
  2. Step 2: Convert to fraction form
    103,681.12/155,429.04 = 40,486.54/x
  3. Step 3: Cross multiply
    103,681.12x = 155,429.04 × 40,486.54
  4. Step 4: Simplify right side
    103,681.12x = 6,292,784,045.12
  5. Step 5: Solve for x
    x = 6,292,784,045.12/103,681.12
  6. Step 6: Final answer
    x = 60,693.63

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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.