Home / 87,276.70-130,925.30-31,124.79

Finding the Fourth Proportional to 87,276.70, 130,925.30 and 31,124.79

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Solution

The fourth proportional to 87,276.70, 130,925.30 and 31,124.79 is: 46,690.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,276.70 : 130,925.30 = 31,124.79 : x
  2. Step 2: Convert to fraction form
    87,276.70/130,925.30 = 31,124.79/x
  3. Step 3: Cross multiply
    87,276.70x = 130,925.30 × 31,124.79
  4. Step 4: Simplify right side
    87,276.70x = 4,075,022,390.38
  5. Step 5: Solve for x
    x = 4,075,022,390.38/87,276.70
  6. Step 6: Final answer
    x = 46,690.84

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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.