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Finding the Fourth Proportional to 43,333.30, 64,999.95 and 21,160.90

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Solution

The fourth proportional to 43,333.30, 64,999.95 and 21,160.90 is: 31,741.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,333.30 : 64,999.95 = 21,160.90 : x
  2. Step 2: Convert to fraction form
    43,333.30/64,999.95 = 21,160.90/x
  3. Step 3: Cross multiply
    43,333.30x = 64,999.95 × 21,160.90
  4. Step 4: Simplify right side
    43,333.30x = 1,375,457,441.96
  5. Step 5: Solve for x
    x = 1,375,457,441.96/43,333.30
  6. Step 6: Final answer
    x = 31,741.35

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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.