Home / 42,261,853.20-63,392,779.80-20,685,348.60

Finding the Fourth Proportional to 42,261,853.20, 63,392,779.80 and 20,685,348.60

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Solution

The fourth proportional to 42,261,853.20, 63,392,779.80 and 20,685,348.60 is: 31,028,022.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,261,853.20 : 63,392,779.80 = 20,685,348.60 : x
  2. Step 2: Convert to fraction form
    42,261,853.20/63,392,779.80 = 20,685,348.60/x
  3. Step 3: Cross multiply
    42,261,853.20x = 63,392,779.80 × 20,685,348.60
  4. Step 4: Simplify right side
    42,261,853.20x = 1,311,301,748,886,038.25
  5. Step 5: Solve for x
    x = 1,311,301,748,886,038.25/42,261,853.20
  6. Step 6: Final answer
    x = 31,028,022.90

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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.