Home / 91,709.40-126,581.47-55,919.14

Finding the Fourth Proportional to 91,709.40, 126,581.47 and 55,919.14

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Solution

The fourth proportional to 91,709.40, 126,581.47 and 55,919.14 is: 77,182.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,709.40 : 126,581.47 = 55,919.14 : x
  2. Step 2: Convert to fraction form
    91,709.40/126,581.47 = 55,919.14/x
  3. Step 3: Cross multiply
    91,709.40x = 126,581.47 × 55,919.14
  4. Step 4: Simplify right side
    91,709.40x = 7,078,326,942.34
  5. Step 5: Solve for x
    x = 7,078,326,942.34/91,709.40
  6. Step 6: Final answer
    x = 77,182.13

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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.