Home / 91,707.70-137,561.55-56,667.10

Finding the Fourth Proportional to 91,707.70, 137,561.55 and 56,667.10

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Solution

The fourth proportional to 91,707.70, 137,561.55 and 56,667.10 is: 85,000.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,707.70 : 137,561.55 = 56,667.10 : x
  2. Step 2: Convert to fraction form
    91,707.70/137,561.55 = 56,667.10/x
  3. Step 3: Cross multiply
    91,707.70x = 137,561.55 × 56,667.10
  4. Step 4: Simplify right side
    91,707.70x = 7,795,214,110.01
  5. Step 5: Solve for x
    x = 7,795,214,110.01/91,707.70
  6. Step 6: Final answer
    x = 85,000.65

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1.5x scale

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.