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Finding the Fourth Proportional to 71,892,093.40, 107,838,140.10 and 20,775,779.80

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Solution

The fourth proportional to 71,892,093.40, 107,838,140.10 and 20,775,779.80 is: 31,163,669.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,892,093.40 : 107,838,140.10 = 20,775,779.80 : x
  2. Step 2: Convert to fraction form
    71,892,093.40/107,838,140.10 = 20,775,779.80/x
  3. Step 3: Cross multiply
    71,892,093.40x = 107,838,140.10 × 20,775,779.80
  4. Step 4: Simplify right side
    71,892,093.40x = 2,240,421,452,759,150
  5. Step 5: Solve for x
    x = 2,240,421,452,759,150/71,892,093.40
  6. Step 6: Final answer
    x = 31,163,669.70

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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.