Home / 76,279.68-105,203.79-53,693.64

Finding the Fourth Proportional to 76,279.68, 105,203.79 and 53,693.64

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Solution

The fourth proportional to 76,279.68, 105,203.79 and 53,693.64 is: 74,053.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,279.68 : 105,203.79 = 53,693.64 : x
  2. Step 2: Convert to fraction form
    76,279.68/105,203.79 = 53,693.64/x
  3. Step 3: Cross multiply
    76,279.68x = 105,203.79 × 53,693.64
  4. Step 4: Simplify right side
    76,279.68x = 5,648,774,426.90
  5. Step 5: Solve for x
    x = 5,648,774,426.90/76,279.68
  6. Step 6: Final answer
    x = 74,053.46

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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.