Home / 90,417.25-124,808.09-61,716.36

Finding the Fourth Proportional to 90,417.25, 124,808.09 and 61,716.36

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Solution

The fourth proportional to 90,417.25, 124,808.09 and 61,716.36 is: 85,190.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,417.25 : 124,808.09 = 61,716.36 : x
  2. Step 2: Convert to fraction form
    90,417.25/124,808.09 = 61,716.36/x
  3. Step 3: Cross multiply
    90,417.25x = 124,808.09 × 61,716.36
  4. Step 4: Simplify right side
    90,417.25x = 7,702,701,519.96
  5. Step 5: Solve for x
    x = 7,702,701,519.96/90,417.25
  6. Step 6: Final answer
    x = 85,190.62

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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.