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Finding the Fourth Proportional to 64,485.65, 88,990.56 and 35,805.71

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Solution

The fourth proportional to 64,485.65, 88,990.56 and 35,805.71 is: 49,412.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,485.65 : 88,990.56 = 35,805.71 : x
  2. Step 2: Convert to fraction form
    64,485.65/88,990.56 = 35,805.71/x
  3. Step 3: Cross multiply
    64,485.65x = 88,990.56 × 35,805.71
  4. Step 4: Simplify right side
    64,485.65x = 3,186,369,739.14
  5. Step 5: Solve for x
    x = 3,186,369,739.14/64,485.65
  6. Step 6: Final answer
    x = 49,412.08

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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.