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Finding the Fourth Proportional to 50,897.88, 70,238.96 and 28,240.32

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Solution

The fourth proportional to 50,897.88, 70,238.96 and 28,240.32 is: 38,971.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,897.88 : 70,238.96 = 28,240.32 : x
  2. Step 2: Convert to fraction form
    50,897.88/70,238.96 = 28,240.32/x
  3. Step 3: Cross multiply
    50,897.88x = 70,238.96 × 28,240.32
  4. Step 4: Simplify right side
    50,897.88x = 1,983,570,706.87
  5. Step 5: Solve for x
    x = 1,983,570,706.87/50,897.88
  6. Step 6: Final answer
    x = 38,971.58

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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.