Home / 76,390.08-114,570.24-38,429.20

Finding the Fourth Proportional to 76,390.08, 114,570.24 and 38,429.20

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Solution

The fourth proportional to 76,390.08, 114,570.24 and 38,429.20 is: 57,636.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,390.08 : 114,570.24 = 38,429.20 : x
  2. Step 2: Convert to fraction form
    76,390.08/114,570.24 = 38,429.20/x
  3. Step 3: Cross multiply
    76,390.08x = 114,570.24 × 38,429.20
  4. Step 4: Simplify right side
    76,390.08x = 4,402,842,667.01
  5. Step 5: Solve for x
    x = 4,402,842,667.01/76,390.08
  6. Step 6: Final answer
    x = 57,636.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.