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Finding the Fourth Proportional to 42,997.76, 64,420.26 and 36,693.80

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Solution

The fourth proportional to 42,997.76, 64,420.26 and 36,693.80 is: 54,975.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,997.76 : 64,420.26 = 36,693.80 : x
  2. Step 2: Convert to fraction form
    42,997.76/64,420.26 = 36,693.80/x
  3. Step 3: Cross multiply
    42,997.76x = 64,420.26 × 36,693.80
  4. Step 4: Simplify right side
    42,997.76x = 2,363,824,136.39
  5. Step 5: Solve for x
    x = 2,363,824,136.39/42,997.76
  6. Step 6: Final answer
    x = 54,975.52

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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.