Home / 91,000.87-136,501.67-27,820.76

Finding the Fourth Proportional to 91,000.87, 136,501.67 and 27,820.76

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Solution

The fourth proportional to 91,000.87, 136,501.67 and 27,820.76 is: 41,731.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,000.87 : 136,501.67 = 27,820.76 : x
  2. Step 2: Convert to fraction form
    91,000.87/136,501.67 = 27,820.76/x
  3. Step 3: Cross multiply
    91,000.87x = 136,501.67 × 27,820.76
  4. Step 4: Simplify right side
    91,000.87x = 3,797,579,587.71
  5. Step 5: Solve for x
    x = 3,797,579,587.71/91,000.87
  6. Step 6: Final answer
    x = 41,731.25

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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.