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Finding the Fourth Proportional to 30,485.98, 45,957.46 and 28,453.89

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Solution

The fourth proportional to 30,485.98, 45,957.46 and 28,453.89 is: 42,894.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,485.98 : 45,957.46 = 28,453.89 : x
  2. Step 2: Convert to fraction form
    30,485.98/45,957.46 = 28,453.89/x
  3. Step 3: Cross multiply
    30,485.98x = 45,957.46 × 28,453.89
  4. Step 4: Simplify right side
    30,485.98x = 1,307,668,511.52
  5. Step 5: Solve for x
    x = 1,307,668,511.52/30,485.98
  6. Step 6: Final answer
    x = 42,894.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.