Home / 91,317.60-136,987.34-38,720.25

Finding the Fourth Proportional to 91,317.60, 136,987.34 and 38,720.25

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Solution

The fourth proportional to 91,317.60, 136,987.34 and 38,720.25 is: 58,085.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,317.60 : 136,987.34 = 38,720.25 : x
  2. Step 2: Convert to fraction form
    91,317.60/136,987.34 = 38,720.25/x
  3. Step 3: Cross multiply
    91,317.60x = 136,987.34 × 38,720.25
  4. Step 4: Simplify right side
    91,317.60x = 5,304,183,858.03
  5. Step 5: Solve for x
    x = 5,304,183,858.03/91,317.60
  6. Step 6: Final answer
    x = 58,085.01

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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.