Home / 90,713.40-135,956.70-46,357.80

Finding the Fourth Proportional to 90,713.40, 135,956.70 and 46,357.80

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Solution

The fourth proportional to 90,713.40, 135,956.70 and 46,357.80 is: 69,478.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,713.40 : 135,956.70 = 46,357.80 : x
  2. Step 2: Convert to fraction form
    90,713.40/135,956.70 = 46,357.80/x
  3. Step 3: Cross multiply
    90,713.40x = 135,956.70 × 46,357.80
  4. Step 4: Simplify right side
    90,713.40x = 6,302,653,507.26
  5. Step 5: Solve for x
    x = 6,302,653,507.26/90,713.40
  6. Step 6: Final answer
    x = 69,478.75

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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.