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Finding the Fourth Proportional to 105,486.66, 145,571.58 and 57,740.04

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Solution

The fourth proportional to 105,486.66, 145,571.58 and 57,740.04 is: 79,681.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,486.66 : 145,571.58 = 57,740.04 : x
  2. Step 2: Convert to fraction form
    105,486.66/145,571.58 = 57,740.04/x
  3. Step 3: Cross multiply
    105,486.66x = 145,571.58 × 57,740.04
  4. Step 4: Simplify right side
    105,486.66x = 8,405,308,852.06
  5. Step 5: Solve for x
    x = 8,405,308,852.06/105,486.66
  6. Step 6: Final answer
    x = 79,681.25

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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.