Home / 91,429.14-137,146.74-31,457.04

Finding the Fourth Proportional to 91,429.14, 137,146.74 and 31,457.04

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Solution

The fourth proportional to 91,429.14, 137,146.74 and 31,457.04 is: 47,186.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,429.14 : 137,146.74 = 31,457.04 : x
  2. Step 2: Convert to fraction form
    91,429.14/137,146.74 = 31,457.04/x
  3. Step 3: Cross multiply
    91,429.14x = 137,146.74 × 31,457.04
  4. Step 4: Simplify right side
    91,429.14x = 4,314,230,486.05
  5. Step 5: Solve for x
    x = 4,314,230,486.05/91,429.14
  6. Step 6: Final answer
    x = 47,186.60

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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.