Home / 76,534.16-114,801.08-21,130

Finding the Fourth Proportional to 76,534.16, 114,801.08 and 21,130

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Solution

The fourth proportional to 76,534.16, 114,801.08 and 21,130 is: 31,694.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,534.16 : 114,801.08 = 21,130 : x
  2. Step 2: Convert to fraction form
    76,534.16/114,801.08 = 21,130/x
  3. Step 3: Cross multiply
    76,534.16x = 114,801.08 × 21,130
  4. Step 4: Simplify right side
    76,534.16x = 2,425,746,820.40
  5. Step 5: Solve for x
    x = 2,425,746,820.40/76,534.16
  6. Step 6: Final answer
    x = 31,694.96

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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.