Home / 90,218.12-124,495.87-49,929.48

Finding the Fourth Proportional to 90,218.12, 124,495.87 and 49,929.48

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Solution

The fourth proportional to 90,218.12, 124,495.87 and 49,929.48 is: 68,899.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,218.12 : 124,495.87 = 49,929.48 : x
  2. Step 2: Convert to fraction form
    90,218.12/124,495.87 = 49,929.48/x
  3. Step 3: Cross multiply
    90,218.12x = 124,495.87 × 49,929.48
  4. Step 4: Simplify right side
    90,218.12x = 6,216,014,051.25
  5. Step 5: Solve for x
    x = 6,216,014,051.25/90,218.12
  6. Step 6: Final answer
    x = 68,899.84

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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.