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Finding the Fourth Proportional to 50,956.88, 70,328.88 and 28,303.20

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Solution

The fourth proportional to 50,956.88, 70,328.88 and 28,303.20 is: 39,063.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,956.88 : 70,328.88 = 28,303.20 : x
  2. Step 2: Convert to fraction form
    50,956.88/70,328.88 = 28,303.20/x
  3. Step 3: Cross multiply
    50,956.88x = 70,328.88 × 28,303.20
  4. Step 4: Simplify right side
    50,956.88x = 1,990,532,356.42
  5. Step 5: Solve for x
    x = 1,990,532,356.42/50,956.88
  6. Step 6: Final answer
    x = 39,063.08

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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.