Home / 76,301.28-105,293.88-42,309.90

Finding the Fourth Proportional to 76,301.28, 105,293.88 and 42,309.90

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Solution

The fourth proportional to 76,301.28, 105,293.88 and 42,309.90 is: 58,386.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,301.28 : 105,293.88 = 42,309.90 : x
  2. Step 2: Convert to fraction form
    76,301.28/105,293.88 = 42,309.90/x
  3. Step 3: Cross multiply
    76,301.28x = 105,293.88 × 42,309.90
  4. Step 4: Simplify right side
    76,301.28x = 4,454,973,533.41
  5. Step 5: Solve for x
    x = 4,454,973,533.41/76,301.28
  6. Step 6: Final answer
    x = 58,386.62

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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.