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Finding the Fourth Proportional to 50,819.16, 70,129.50 and 28,158.06

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Solution

The fourth proportional to 50,819.16, 70,129.50 and 28,158.06 is: 38,857.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,819.16 : 70,129.50 = 28,158.06 : x
  2. Step 2: Convert to fraction form
    50,819.16/70,129.50 = 28,158.06/x
  3. Step 3: Cross multiply
    50,819.16x = 70,129.50 × 28,158.06
  4. Step 4: Simplify right side
    50,819.16x = 1,974,710,668.77
  5. Step 5: Solve for x
    x = 1,974,710,668.77/50,819.16
  6. Step 6: Final answer
    x = 38,857.60

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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.