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Finding the Fourth Proportional to 64,971.83, 89,661.80 and 38,114.79

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Solution

The fourth proportional to 64,971.83, 89,661.80 and 38,114.79 is: 52,598.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,971.83 : 89,661.80 = 38,114.79 : x
  2. Step 2: Convert to fraction form
    64,971.83/89,661.80 = 38,114.79/x
  3. Step 3: Cross multiply
    64,971.83x = 89,661.80 × 38,114.79
  4. Step 4: Simplify right side
    64,971.83x = 3,417,440,487.45
  5. Step 5: Solve for x
    x = 3,417,440,487.45/64,971.83
  6. Step 6: Final answer
    x = 52,598.81

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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.