Home / 72,380,453.77-99,885,689.16-39,340,779.11

Finding the Fourth Proportional to 72,380,453.77, 99,885,689.16 and 39,340,779.11

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Solution

The fourth proportional to 72,380,453.77, 99,885,689.16 and 39,340,779.11 is: 54,290,635.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,380,453.77 : 99,885,689.16 = 39,340,779.11 : x
  2. Step 2: Convert to fraction form
    72,380,453.77/99,885,689.16 = 39,340,779.11/x
  3. Step 3: Cross multiply
    72,380,453.77x = 99,885,689.16 × 39,340,779.11
  4. Step 4: Simplify right side
    72,380,453.77x = 3,929,580,832,940,317.50
  5. Step 5: Solve for x
    x = 3,929,580,832,940,317.50/72,380,453.77
  6. Step 6: Final answer
    x = 54,290,635.50

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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.