Home / 91,130.19-136,690.43-31,971.84

Finding the Fourth Proportional to 91,130.19, 136,690.43 and 31,971.84

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Solution

The fourth proportional to 91,130.19, 136,690.43 and 31,971.84 is: 47,956.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,130.19 : 136,690.43 = 31,971.84 : x
  2. Step 2: Convert to fraction form
    91,130.19/136,690.43 = 31,971.84/x
  3. Step 3: Cross multiply
    91,130.19x = 136,690.43 × 31,971.84
  4. Step 4: Simplify right side
    91,130.19x = 4,370,244,397.63
  5. Step 5: Solve for x
    x = 4,370,244,397.63/91,130.19
  6. Step 6: Final answer
    x = 47,956.05

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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.