Home / 47,435.60-71,095.80-21,112.40

Finding the Fourth Proportional to 47,435.60, 71,095.80 and 21,112.40

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Solution

The fourth proportional to 47,435.60, 71,095.80 and 21,112.40 is: 31,642.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,435.60 : 71,095.80 = 21,112.40 : x
  2. Step 2: Convert to fraction form
    47,435.60/71,095.80 = 21,112.40/x
  3. Step 3: Cross multiply
    47,435.60x = 71,095.80 × 21,112.40
  4. Step 4: Simplify right side
    47,435.60x = 1,501,002,967.92
  5. Step 5: Solve for x
    x = 1,501,002,967.92/47,435.60
  6. Step 6: Final answer
    x = 31,642.96

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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.