Home / 91,791.48-137,681.58-54,588.30

Finding the Fourth Proportional to 91,791.48, 137,681.58 and 54,588.30

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Solution

The fourth proportional to 91,791.48, 137,681.58 and 54,588.30 is: 81,879.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,791.48 : 137,681.58 = 54,588.30 : x
  2. Step 2: Convert to fraction form
    91,791.48/137,681.58 = 54,588.30/x
  3. Step 3: Cross multiply
    91,791.48x = 137,681.58 × 54,588.30
  4. Step 4: Simplify right side
    91,791.48x = 7,515,803,393.51
  5. Step 5: Solve for x
    x = 7,515,803,393.51/91,791.48
  6. Step 6: Final answer
    x = 81,879.10

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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.