Home / 78,023,515.08-107,672,448.80-43,218,447.52

Finding the Fourth Proportional to 78,023,515.08, 107,672,448.80 and 43,218,447.52

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Solution

The fourth proportional to 78,023,515.08, 107,672,448.80 and 43,218,447.52 is: 59,641,456.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,023,515.08 : 107,672,448.80 = 43,218,447.52 : x
  2. Step 2: Convert to fraction form
    78,023,515.08/107,672,448.80 = 43,218,447.52/x
  3. Step 3: Cross multiply
    78,023,515.08x = 107,672,448.80 × 43,218,447.52
  4. Step 4: Simplify right side
    78,023,515.08x = 4,653,436,077,812,687
  5. Step 5: Solve for x
    x = 4,653,436,077,812,687/78,023,515.08
  6. Step 6: Final answer
    x = 59,641,456.46

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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.