Home / 78,002,809.50-107,643,779.92-43,195,457.90

Finding the Fourth Proportional to 78,002,809.50, 107,643,779.92 and 43,195,457.90

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Solution

The fourth proportional to 78,002,809.50, 107,643,779.92 and 43,195,457.90 is: 59,609,678.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,002,809.50 : 107,643,779.92 = 43,195,457.90 : x
  2. Step 2: Convert to fraction form
    78,002,809.50/107,643,779.92 = 43,195,457.90/x
  3. Step 3: Cross multiply
    78,002,809.50x = 107,643,779.92 × 43,195,457.90
  4. Step 4: Simplify right side
    78,002,809.50x = 4,649,722,363,731,225
  5. Step 5: Solve for x
    x = 4,649,722,363,731,225/78,002,809.50
  6. Step 6: Final answer
    x = 59,609,678.08

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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.