Home / 91,072.40-136,462.80-57,732.80

Finding the Fourth Proportional to 91,072.40, 136,462.80 and 57,732.80

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Solution

The fourth proportional to 91,072.40, 136,462.80 and 57,732.80 is: 86,506.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,072.40 : 136,462.80 = 57,732.80 : x
  2. Step 2: Convert to fraction form
    91,072.40/136,462.80 = 57,732.80/x
  3. Step 3: Cross multiply
    91,072.40x = 136,462.80 × 57,732.80
  4. Step 4: Simplify right side
    91,072.40x = 7,878,379,539.84
  5. Step 5: Solve for x
    x = 7,878,379,539.84/91,072.40
  6. Step 6: Final answer
    x = 86,506.77

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1.5x scale

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.