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Finding the Fourth Proportional to 65,521.52, 90,413.44 and 38,303.99

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Solution

The fourth proportional to 65,521.52, 90,413.44 and 38,303.99 is: 52,855.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,521.52 : 90,413.44 = 38,303.99 : x
  2. Step 2: Convert to fraction form
    65,521.52/90,413.44 = 38,303.99/x
  3. Step 3: Cross multiply
    65,521.52x = 90,413.44 × 38,303.99
  4. Step 4: Simplify right side
    65,521.52x = 3,463,194,953.80
  5. Step 5: Solve for x
    x = 3,463,194,953.80/65,521.52
  6. Step 6: Final answer
    x = 52,855.84

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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.