Home / 76,538.70-105,659.28-51,088.05

Finding the Fourth Proportional to 76,538.70, 105,659.28 and 51,088.05

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Solution

The fourth proportional to 76,538.70, 105,659.28 and 51,088.05 is: 70,525.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,538.70 : 105,659.28 = 51,088.05 : x
  2. Step 2: Convert to fraction form
    76,538.70/105,659.28 = 51,088.05/x
  3. Step 3: Cross multiply
    76,538.70x = 105,659.28 × 51,088.05
  4. Step 4: Simplify right side
    76,538.70x = 5,397,926,579.60
  5. Step 5: Solve for x
    x = 5,397,926,579.60/76,538.70
  6. Step 6: Final answer
    x = 70,525.45

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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.