Home / 86,908,897.70-130,363,346.55-72,878,855.30

Finding the Fourth Proportional to 86,908,897.70, 130,363,346.55 and 72,878,855.30

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Solution

The fourth proportional to 86,908,897.70, 130,363,346.55 and 72,878,855.30 is: 109,318,282.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,908,897.70 : 130,363,346.55 = 72,878,855.30 : x
  2. Step 2: Convert to fraction form
    86,908,897.70/130,363,346.55 = 72,878,855.30/x
  3. Step 3: Cross multiply
    86,908,897.70x = 130,363,346.55 × 72,878,855.30
  4. Step 4: Simplify right side
    86,908,897.70x = 9,500,731,469,641,204
  5. Step 5: Solve for x
    x = 9,500,731,469,641,204/86,908,897.70
  6. Step 6: Final answer
    x = 109,318,282.95

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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.