Home / 90,449.36-124,881.98-56,509.56

Finding the Fourth Proportional to 90,449.36, 124,881.98 and 56,509.56

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Solution

The fourth proportional to 90,449.36, 124,881.98 and 56,509.56 is: 78,021.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,449.36 : 124,881.98 = 56,509.56 : x
  2. Step 2: Convert to fraction form
    90,449.36/124,881.98 = 56,509.56/x
  3. Step 3: Cross multiply
    90,449.36x = 124,881.98 × 56,509.56
  4. Step 4: Simplify right side
    90,449.36x = 7,057,025,741.73
  5. Step 5: Solve for x
    x = 7,057,025,741.73/90,449.36
  6. Step 6: Final answer
    x = 78,021.84

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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.