Home / 72,270.45-99,737.60-40,438.67

Finding the Fourth Proportional to 72,270.45, 99,737.60 and 40,438.67

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Solution

The fourth proportional to 72,270.45, 99,737.60 and 40,438.67 is: 55,807.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,270.45 : 99,737.60 = 40,438.67 : x
  2. Step 2: Convert to fraction form
    72,270.45/99,737.60 = 40,438.67/x
  3. Step 3: Cross multiply
    72,270.45x = 99,737.60 × 40,438.67
  4. Step 4: Simplify right side
    72,270.45x = 4,033,255,892.99
  5. Step 5: Solve for x
    x = 4,033,255,892.99/72,270.45
  6. Step 6: Final answer
    x = 55,807.81

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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.