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Finding the Fourth Proportional to 64,975.74, 89,667.26 and 38,118.71

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Solution

The fourth proportional to 64,975.74, 89,667.26 and 38,118.71 is: 52,604.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,975.74 : 89,667.26 = 38,118.71 : x
  2. Step 2: Convert to fraction form
    64,975.74/89,667.26 = 38,118.71/x
  3. Step 3: Cross multiply
    64,975.74x = 89,667.26 × 38,118.71
  4. Step 4: Simplify right side
    64,975.74x = 3,417,999,641.50
  5. Step 5: Solve for x
    x = 3,417,999,641.50/64,975.74
  6. Step 6: Final answer
    x = 52,604.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.