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Finding the Fourth Proportional to 60,603.20, 90,831.90 and 31,005.80

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Solution

The fourth proportional to 60,603.20, 90,831.90 and 31,005.80 is: 46,471.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,603.20 : 90,831.90 = 31,005.80 : x
  2. Step 2: Convert to fraction form
    60,603.20/90,831.90 = 31,005.80/x
  3. Step 3: Cross multiply
    60,603.20x = 90,831.90 × 31,005.80
  4. Step 4: Simplify right side
    60,603.20x = 2,816,315,725.02
  5. Step 5: Solve for x
    x = 2,816,315,725.02/60,603.20
  6. Step 6: Final answer
    x = 46,471.40

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1.5x scale

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.