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Finding the Fourth Proportional to 63,909,009.40, 95,863,514.10 and 20,779,619.80

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Solution

The fourth proportional to 63,909,009.40, 95,863,514.10 and 20,779,619.80 is: 31,169,429.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,909,009.40 : 95,863,514.10 = 20,779,619.80 : x
  2. Step 2: Convert to fraction form
    63,909,009.40/95,863,514.10 = 20,779,619.80/x
  3. Step 3: Cross multiply
    63,909,009.40x = 95,863,514.10 × 20,779,619.80
  4. Step 4: Simplify right side
    63,909,009.40x = 1,992,007,375,689,939.25
  5. Step 5: Solve for x
    x = 1,992,007,375,689,939.25/63,909,009.40
  6. Step 6: Final answer
    x = 31,169,429.70

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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.