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Finding the Fourth Proportional to 50,739.01, 70,023.34 and 28,078.95

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Solution

The fourth proportional to 50,739.01, 70,023.34 and 28,078.95 is: 38,750.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,739.01 : 70,023.34 = 28,078.95 : x
  2. Step 2: Convert to fraction form
    50,739.01/70,023.34 = 28,078.95/x
  3. Step 3: Cross multiply
    50,739.01x = 70,023.34 × 28,078.95
  4. Step 4: Simplify right side
    50,739.01x = 1,966,181,862.69
  5. Step 5: Solve for x
    x = 1,966,181,862.69/50,739.01
  6. Step 6: Final answer
    x = 38,750.89

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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.