Home / 90,724,205.10-135,999,216.45-30,108,729.90

Finding the Fourth Proportional to 90,724,205.10, 135,999,216.45 and 30,108,729.90

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Solution

The fourth proportional to 90,724,205.10, 135,999,216.45 and 30,108,729.90 is: 45,134,191.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,724,205.10 : 135,999,216.45 = 30,108,729.90 : x
  2. Step 2: Convert to fraction form
    90,724,205.10/135,999,216.45 = 30,108,729.90/x
  3. Step 3: Cross multiply
    90,724,205.10x = 135,999,216.45 × 30,108,729.90
  4. Step 4: Simplify right side
    90,724,205.10x = 4,094,763,674,704,686.50
  5. Step 5: Solve for x
    x = 4,094,763,674,704,686.50/90,724,205.10
  6. Step 6: Final answer
    x = 45,134,191.81

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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.