Home / 87,140.55-130,684.65-30,973.28

Finding the Fourth Proportional to 87,140.55, 130,684.65 and 30,973.28

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Solution

The fourth proportional to 87,140.55, 130,684.65 and 30,973.28 is: 46,450.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,140.55 : 130,684.65 = 30,973.28 : x
  2. Step 2: Convert to fraction form
    87,140.55/130,684.65 = 30,973.28/x
  3. Step 3: Cross multiply
    87,140.55x = 130,684.65 × 30,973.28
  4. Step 4: Simplify right side
    87,140.55x = 4,047,731,602.73
  5. Step 5: Solve for x
    x = 4,047,731,602.73/87,140.55
  6. Step 6: Final answer
    x = 46,450.61

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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.