Home / 91,290.24-136,909.44-28,959.12

Finding the Fourth Proportional to 91,290.24, 136,909.44 and 28,959.12

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Solution

The fourth proportional to 91,290.24, 136,909.44 and 28,959.12 is: 43,430.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,290.24 : 136,909.44 = 28,959.12 : x
  2. Step 2: Convert to fraction form
    91,290.24/136,909.44 = 28,959.12/x
  3. Step 3: Cross multiply
    91,290.24x = 136,909.44 × 28,959.12
  4. Step 4: Simplify right side
    91,290.24x = 3,964,776,902.09
  5. Step 5: Solve for x
    x = 3,964,776,902.09/91,290.24
  6. Step 6: Final answer
    x = 43,430.46

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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.