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Finding the Fourth Proportional to 50,776.69, 70,075.77 and 28,117.78

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Solution

The fourth proportional to 50,776.69, 70,075.77 and 28,117.78 is: 38,804.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,776.69 : 70,075.77 = 28,117.78 : x
  2. Step 2: Convert to fraction form
    50,776.69/70,075.77 = 28,117.78/x
  3. Step 3: Cross multiply
    50,776.69x = 70,075.77 × 28,117.78
  4. Step 4: Simplify right side
    50,776.69x = 1,970,375,084.19
  5. Step 5: Solve for x
    x = 1,970,375,084.19/50,776.69
  6. Step 6: Final answer
    x = 38,804.72

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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.