Home / 91,567.80-126,378.90-55,771.74

Finding the Fourth Proportional to 91,567.80, 126,378.90 and 55,771.74

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Solution

The fourth proportional to 91,567.80, 126,378.90 and 55,771.74 is: 76,974.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,567.80 : 126,378.90 = 55,771.74 : x
  2. Step 2: Convert to fraction form
    91,567.80/126,378.90 = 55,771.74/x
  3. Step 3: Cross multiply
    91,567.80x = 126,378.90 × 55,771.74
  4. Step 4: Simplify right side
    91,567.80x = 7,048,371,152.29
  5. Step 5: Solve for x
    x = 7,048,371,152.29/91,567.80
  6. Step 6: Final answer
    x = 76,974.34

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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.