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Finding the Fourth Proportional to 50,715, 69,985.44 and 28,054.89

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Solution

The fourth proportional to 50,715, 69,985.44 and 28,054.89 is: 38,715.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,715 : 69,985.44 = 28,054.89 : x
  2. Step 2: Convert to fraction form
    50,715/69,985.44 = 28,054.89/x
  3. Step 3: Cross multiply
    50,715x = 69,985.44 × 28,054.89
  4. Step 4: Simplify right side
    50,715x = 1,963,433,820.80
  5. Step 5: Solve for x
    x = 1,963,433,820.80/50,715
  6. Step 6: Final answer
    x = 38,715.05

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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.