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Finding the Fourth Proportional to 50,740.89, 70,021.71 and 28,078.08

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Solution

The fourth proportional to 50,740.89, 70,021.71 and 28,078.08 is: 38,747.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,740.89 : 70,021.71 = 28,078.08 : x
  2. Step 2: Convert to fraction form
    50,740.89/70,021.71 = 28,078.08/x
  3. Step 3: Cross multiply
    50,740.89x = 70,021.71 × 28,078.08
  4. Step 4: Simplify right side
    50,740.89x = 1,966,075,175.12
  5. Step 5: Solve for x
    x = 1,966,075,175.12/50,740.89
  6. Step 6: Final answer
    x = 38,747.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.