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Finding the Fourth Proportional to 42,937.40, 64,430.46 and 16,643.96

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Solution

The fourth proportional to 42,937.40, 64,430.46 and 16,643.96 is: 24,975.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,937.40 : 64,430.46 = 16,643.96 : x
  2. Step 2: Convert to fraction form
    42,937.40/64,430.46 = 16,643.96/x
  3. Step 3: Cross multiply
    42,937.40x = 64,430.46 × 16,643.96
  4. Step 4: Simplify right side
    42,937.40x = 1,072,377,999.02
  5. Step 5: Solve for x
    x = 1,072,377,999.02/42,937.40
  6. Step 6: Final answer
    x = 24,975.38

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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.