Home / 81,263.28-121,885.20-36,888.24

Finding the Fourth Proportional to 81,263.28, 121,885.20 and 36,888.24

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Solution

The fourth proportional to 81,263.28, 121,885.20 and 36,888.24 is: 55,327.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,263.28 : 121,885.20 = 36,888.24 : x
  2. Step 2: Convert to fraction form
    81,263.28/121,885.20 = 36,888.24/x
  3. Step 3: Cross multiply
    81,263.28x = 121,885.20 × 36,888.24
  4. Step 4: Simplify right side
    81,263.28x = 4,496,130,510.05
  5. Step 5: Solve for x
    x = 4,496,130,510.05/81,263.28
  6. Step 6: Final answer
    x = 55,327.95

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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.