Home / 90,309.12-124,653.76-58,480.32

Finding the Fourth Proportional to 90,309.12, 124,653.76 and 58,480.32

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Solution

The fourth proportional to 90,309.12, 124,653.76 and 58,480.32 is: 80,720.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,309.12 : 124,653.76 = 58,480.32 : x
  2. Step 2: Convert to fraction form
    90,309.12/124,653.76 = 58,480.32/x
  3. Step 3: Cross multiply
    90,309.12x = 124,653.76 × 58,480.32
  4. Step 4: Simplify right side
    90,309.12x = 7,289,791,774.00
  5. Step 5: Solve for x
    x = 7,289,791,774.00/90,309.12
  6. Step 6: Final answer
    x = 80,720.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.