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Finding the Fourth Proportional to 72,587.70, 108,830.07 and 28,177.02

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Solution

The fourth proportional to 72,587.70, 108,830.07 and 28,177.02 is: 42,245.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,587.70 : 108,830.07 = 28,177.02 : x
  2. Step 2: Convert to fraction form
    72,587.70/108,830.07 = 28,177.02/x
  3. Step 3: Cross multiply
    72,587.70x = 108,830.07 × 28,177.02
  4. Step 4: Simplify right side
    72,587.70x = 3,066,507,058.99
  5. Step 5: Solve for x
    x = 3,066,507,058.99/72,587.70
  6. Step 6: Final answer
    x = 42,245.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.