Home / 81,157.42-111,989.95-45,342.46

Finding the Fourth Proportional to 81,157.42, 111,989.95 and 45,342.46

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Solution

The fourth proportional to 81,157.42, 111,989.95 and 45,342.46 is: 62,568.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,157.42 : 111,989.95 = 45,342.46 : x
  2. Step 2: Convert to fraction form
    81,157.42/111,989.95 = 45,342.46/x
  3. Step 3: Cross multiply
    81,157.42x = 111,989.95 × 45,342.46
  4. Step 4: Simplify right side
    81,157.42x = 5,077,899,828.28
  5. Step 5: Solve for x
    x = 5,077,899,828.28/81,157.42
  6. Step 6: Final answer
    x = 62,568.52

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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.