Home / 81,370.08-122,259.60-51,801.12

Finding the Fourth Proportional to 81,370.08, 122,259.60 and 51,801.12

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Solution

The fourth proportional to 81,370.08, 122,259.60 and 51,801.12 is: 77,831.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,370.08 : 122,259.60 = 51,801.12 : x
  2. Step 2: Convert to fraction form
    81,370.08/122,259.60 = 51,801.12/x
  3. Step 3: Cross multiply
    81,370.08x = 122,259.60 × 51,801.12
  4. Step 4: Simplify right side
    81,370.08x = 6,333,184,210.75
  5. Step 5: Solve for x
    x = 6,333,184,210.75/81,370.08
  6. Step 6: Final answer
    x = 77,831.85

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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.