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Finding the Fourth Proportional to 43,269.80, 64,904.70 and 40,645.40

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Solution

The fourth proportional to 43,269.80, 64,904.70 and 40,645.40 is: 60,968.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,269.80 : 64,904.70 = 40,645.40 : x
  2. Step 2: Convert to fraction form
    43,269.80/64,904.70 = 40,645.40/x
  3. Step 3: Cross multiply
    43,269.80x = 64,904.70 × 40,645.40
  4. Step 4: Simplify right side
    43,269.80x = 2,638,077,493.38
  5. Step 5: Solve for x
    x = 2,638,077,493.38/43,269.80
  6. Step 6: Final answer
    x = 60,968.10

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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.