Home / 85,617,639.84-128,426,708.88-36,420,817.92

Finding the Fourth Proportional to 85,617,639.84, 128,426,708.88 and 36,420,817.92

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Solution

The fourth proportional to 85,617,639.84, 128,426,708.88 and 36,420,817.92 is: 54,631,332.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,617,639.84 : 128,426,708.88 = 36,420,817.92 : x
  2. Step 2: Convert to fraction form
    85,617,639.84/128,426,708.88 = 36,420,817.92/x
  3. Step 3: Cross multiply
    85,617,639.84x = 128,426,708.88 × 36,420,817.92
  4. Step 4: Simplify right side
    85,617,639.84x = 4,677,405,780,183,327
  5. Step 5: Solve for x
    x = 4,677,405,780,183,327/85,617,639.84
  6. Step 6: Final answer
    x = 54,631,332.85

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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.