Home / 72,586.75-100,178.58-45,728.81

Finding the Fourth Proportional to 72,586.75, 100,178.58 and 45,728.81

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Solution

The fourth proportional to 72,586.75, 100,178.58 and 45,728.81 is: 63,111.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,586.75 : 100,178.58 = 45,728.81 : x
  2. Step 2: Convert to fraction form
    72,586.75/100,178.58 = 45,728.81/x
  3. Step 3: Cross multiply
    72,586.75x = 100,178.58 × 45,728.81
  4. Step 4: Simplify right side
    72,586.75x = 4,581,047,250.89
  5. Step 5: Solve for x
    x = 4,581,047,250.89/72,586.75
  6. Step 6: Final answer
    x = 63,111.34

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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.