Home / 30,791,779.37-42,488,084.76-18,701,657.90

Finding the Fourth Proportional to 30,791,779.37, 42,488,084.76 and 18,701,657.90

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Solution

The fourth proportional to 30,791,779.37, 42,488,084.76 and 18,701,657.90 is: 25,805,511.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,791,779.37 : 42,488,084.76 = 18,701,657.90 : x
  2. Step 2: Convert to fraction form
    30,791,779.37/42,488,084.76 = 18,701,657.90/x
  3. Step 3: Cross multiply
    30,791,779.37x = 42,488,084.76 × 18,701,657.90
  4. Step 4: Simplify right side
    30,791,779.37x = 794,597,625,795,283.12
  5. Step 5: Solve for x
    x = 794,597,625,795,283.12/30,791,779.37
  6. Step 6: Final answer
    x = 25,805,511.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.