Home / 31,500,979.40-47,156,990.70-18,714,902.60

Finding the Fourth Proportional to 31,500,979.40, 47,156,990.70 and 18,714,902.60

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Solution

The fourth proportional to 31,500,979.40, 47,156,990.70 and 18,714,902.60 is: 28,016,223.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,500,979.40 : 47,156,990.70 = 18,714,902.60 : x
  2. Step 2: Convert to fraction form
    31,500,979.40/47,156,990.70 = 18,714,902.60/x
  3. Step 3: Cross multiply
    31,500,979.40x = 47,156,990.70 × 18,714,902.60
  4. Step 4: Simplify right side
    31,500,979.40x = 882,538,487,859,606
  5. Step 5: Solve for x
    x = 882,538,487,859,606/31,500,979.40
  6. Step 6: Final answer
    x = 28,016,223.77

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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.