Home / 78,011,314.68-117,024,714.18-28,840,056.96

Finding the Fourth Proportional to 78,011,314.68, 117,024,714.18 and 28,840,056.96

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Solution

The fourth proportional to 78,011,314.68, 117,024,714.18 and 28,840,056.96 is: 43,262,947.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,011,314.68 : 117,024,714.18 = 28,840,056.96 : x
  2. Step 2: Convert to fraction form
    78,011,314.68/117,024,714.18 = 28,840,056.96/x
  3. Step 3: Cross multiply
    78,011,314.68x = 117,024,714.18 × 28,840,056.96
  4. Step 4: Simplify right side
    78,011,314.68x = 3,374,999,422,678,920
  5. Step 5: Solve for x
    x = 3,374,999,422,678,920/78,011,314.68
  6. Step 6: Final answer
    x = 43,262,947.64

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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.