Home / 51,413.52-70,943.13-28,749.72

Finding the Fourth Proportional to 51,413.52, 70,943.13 and 28,749.72

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Solution

The fourth proportional to 51,413.52, 70,943.13 and 28,749.72 is: 39,670.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,413.52 : 70,943.13 = 28,749.72 : x
  2. Step 2: Convert to fraction form
    51,413.52/70,943.13 = 28,749.72/x
  3. Step 3: Cross multiply
    51,413.52x = 70,943.13 × 28,749.72
  4. Step 4: Simplify right side
    51,413.52x = 2,039,595,123.42
  5. Step 5: Solve for x
    x = 2,039,595,123.42/51,413.52
  6. Step 6: Final answer
    x = 39,670.40

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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.