Home / 90,811.10-125,298.96-55,000.46

Finding the Fourth Proportional to 90,811.10, 125,298.96 and 55,000.46

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Solution

The fourth proportional to 90,811.10, 125,298.96 and 55,000.46 is: 75,888.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,811.10 : 125,298.96 = 55,000.46 : x
  2. Step 2: Convert to fraction form
    90,811.10/125,298.96 = 55,000.46/x
  3. Step 3: Cross multiply
    90,811.10x = 125,298.96 × 55,000.46
  4. Step 4: Simplify right side
    90,811.10x = 6,891,500,437.52
  5. Step 5: Solve for x
    x = 6,891,500,437.52/90,811.10
  6. Step 6: Final answer
    x = 75,888.30

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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.