Home / 42,189.75-58,269.69-28,737.68

Finding the Fourth Proportional to 42,189.75, 58,269.69 and 28,737.68

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Solution

The fourth proportional to 42,189.75, 58,269.69 and 28,737.68 is: 39,690.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,189.75 : 58,269.69 = 28,737.68 : x
  2. Step 2: Convert to fraction form
    42,189.75/58,269.69 = 28,737.68/x
  3. Step 3: Cross multiply
    42,189.75x = 58,269.69 × 28,737.68
  4. Step 4: Simplify right side
    42,189.75x = 1,674,535,413.57
  5. Step 5: Solve for x
    x = 1,674,535,413.57/42,189.75
  6. Step 6: Final answer
    x = 39,690.57

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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.