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Finding the Fourth Proportional to 81,052.90, 121,550.55 and 36,700.90

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Solution

The fourth proportional to 81,052.90, 121,550.55 and 36,700.90 is: 55,038.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,052.90 : 121,550.55 = 36,700.90 : x
  2. Step 2: Convert to fraction form
    81,052.90/121,550.55 = 36,700.90/x
  3. Step 3: Cross multiply
    81,052.90x = 121,550.55 × 36,700.90
  4. Step 4: Simplify right side
    81,052.90x = 4,461,014,580.50
  5. Step 5: Solve for x
    x = 4,461,014,580.50/81,052.90
  6. Step 6: Final answer
    x = 55,038.31

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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.