Home / 103,780.42-155,566.61-40,513.55

Finding the Fourth Proportional to 103,780.42, 155,566.61 and 40,513.55

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Solution

The fourth proportional to 103,780.42, 155,566.61 and 40,513.55 is: 60,729.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,780.42 : 155,566.61 = 40,513.55 : x
  2. Step 2: Convert to fraction form
    103,780.42/155,566.61 = 40,513.55/x
  3. Step 3: Cross multiply
    103,780.42x = 155,566.61 × 40,513.55
  4. Step 4: Simplify right side
    103,780.42x = 6,302,554,652.16
  5. Step 5: Solve for x
    x = 6,302,554,652.16/103,780.42
  6. Step 6: Final answer
    x = 60,729.71

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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.