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Finding the Fourth Proportional to 42,709.86, 63,975.51 and 34,344.63

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Solution

The fourth proportional to 42,709.86, 63,975.51 and 34,344.63 is: 51,445.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,709.86 : 63,975.51 = 34,344.63 : x
  2. Step 2: Convert to fraction form
    42,709.86/63,975.51 = 34,344.63/x
  3. Step 3: Cross multiply
    42,709.86x = 63,975.51 × 34,344.63
  4. Step 4: Simplify right side
    42,709.86x = 2,197,215,220.01
  5. Step 5: Solve for x
    x = 2,197,215,220.01/42,709.86
  6. Step 6: Final answer
    x = 51,445.15

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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.