Home / 80,928,714.30-121,393,071.45-72,425,658.30

Finding the Fourth Proportional to 80,928,714.30, 121,393,071.45 and 72,425,658.30

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Solution

The fourth proportional to 80,928,714.30, 121,393,071.45 and 72,425,658.30 is: 108,638,487.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,928,714.30 : 121,393,071.45 = 72,425,658.30 : x
  2. Step 2: Convert to fraction form
    80,928,714.30/121,393,071.45 = 72,425,658.30/x
  3. Step 3: Cross multiply
    80,928,714.30x = 121,393,071.45 × 72,425,658.30
  4. Step 4: Simplify right side
    80,928,714.30x = 8,791,973,112,825,185
  5. Step 5: Solve for x
    x = 8,791,973,112,825,185/80,928,714.30
  6. Step 6: Final answer
    x = 108,638,487.45

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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.