Home / 81,352.50-121,902.87-56,440.98

Finding the Fourth Proportional to 81,352.50, 121,902.87 and 56,440.98

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Solution

The fourth proportional to 81,352.50, 121,902.87 and 56,440.98 is: 84,574.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,352.50 : 121,902.87 = 56,440.98 : x
  2. Step 2: Convert to fraction form
    81,352.50/121,902.87 = 56,440.98/x
  3. Step 3: Cross multiply
    81,352.50x = 121,902.87 × 56,440.98
  4. Step 4: Simplify right side
    81,352.50x = 6,880,317,447.61
  5. Step 5: Solve for x
    x = 6,880,317,447.61/81,352.50
  6. Step 6: Final answer
    x = 84,574.14

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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.