Home / 91,488.36-126,257.84-56,570.64

Finding the Fourth Proportional to 91,488.36, 126,257.84 and 56,570.64

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Solution

The fourth proportional to 91,488.36, 126,257.84 and 56,570.64 is: 78,069.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,488.36 : 126,257.84 = 56,570.64 : x
  2. Step 2: Convert to fraction form
    91,488.36/126,257.84 = 56,570.64/x
  3. Step 3: Cross multiply
    91,488.36x = 126,257.84 × 56,570.64
  4. Step 4: Simplify right side
    91,488.36x = 7,142,486,813.82
  5. Step 5: Solve for x
    x = 7,142,486,813.82/91,488.36
  6. Step 6: Final answer
    x = 78,069.90

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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.