Home / 90,684,010-135,826,629.04-74,943,444.70

Finding the Fourth Proportional to 90,684,010, 135,826,629.04 and 74,943,444.70

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Solution

The fourth proportional to 90,684,010, 135,826,629.04 and 74,943,444.70 is: 112,250,389.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,684,010 : 135,826,629.04 = 74,943,444.70 : x
  2. Step 2: Convert to fraction form
    90,684,010/135,826,629.04 = 74,943,444.70/x
  3. Step 3: Cross multiply
    90,684,010x = 135,826,629.04 × 74,943,444.70
  4. Step 4: Simplify right side
    90,684,010x = 10,179,315,462,246,654
  5. Step 5: Solve for x
    x = 10,179,315,462,246,654/90,684,010
  6. Step 6: Final answer
    x = 112,250,389.70

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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.