Home / 90,941.12-136,412.16-31,776.56

Finding the Fourth Proportional to 90,941.12, 136,412.16 and 31,776.56

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Solution

The fourth proportional to 90,941.12, 136,412.16 and 31,776.56 is: 47,665.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,941.12 : 136,412.16 = 31,776.56 : x
  2. Step 2: Convert to fraction form
    90,941.12/136,412.16 = 31,776.56/x
  3. Step 3: Cross multiply
    90,941.12x = 136,412.16 × 31,776.56
  4. Step 4: Simplify right side
    90,941.12x = 4,334,709,186.97
  5. Step 5: Solve for x
    x = 4,334,709,186.97/90,941.12
  6. Step 6: Final answer
    x = 47,665.01

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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.