Home / 91,919.81-126,863.14-56,130.46

Finding the Fourth Proportional to 91,919.81, 126,863.14 and 56,130.46

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Solution

The fourth proportional to 91,919.81, 126,863.14 and 56,130.46 is: 77,468.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,919.81 : 126,863.14 = 56,130.46 : x
  2. Step 2: Convert to fraction form
    91,919.81/126,863.14 = 56,130.46/x
  3. Step 3: Cross multiply
    91,919.81x = 126,863.14 × 56,130.46
  4. Step 4: Simplify right side
    91,919.81x = 7,120,886,633.99
  5. Step 5: Solve for x
    x = 7,120,886,633.99/91,919.81
  6. Step 6: Final answer
    x = 77,468.47

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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.