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Finding the Fourth Proportional to 91,412.40, 137,053.80 and 35,230.80

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Solution

The fourth proportional to 91,412.40, 137,053.80 and 35,230.80 is: 52,821.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,412.40 : 137,053.80 = 35,230.80 : x
  2. Step 2: Convert to fraction form
    91,412.40/137,053.80 = 35,230.80/x
  3. Step 3: Cross multiply
    91,412.40x = 137,053.80 × 35,230.80
  4. Step 4: Simplify right side
    91,412.40x = 4,828,515,017.04
  5. Step 5: Solve for x
    x = 4,828,515,017.04/91,412.40
  6. Step 6: Final answer
    x = 52,821.23

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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.