Home / 89,074,515.30-133,611,772.95-78,303,977.70

Finding the Fourth Proportional to 89,074,515.30, 133,611,772.95 and 78,303,977.70

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Solution

The fourth proportional to 89,074,515.30, 133,611,772.95 and 78,303,977.70 is: 117,455,966.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,074,515.30 : 133,611,772.95 = 78,303,977.70 : x
  2. Step 2: Convert to fraction form
    89,074,515.30/133,611,772.95 = 78,303,977.70/x
  3. Step 3: Cross multiply
    89,074,515.30x = 133,611,772.95 × 78,303,977.70
  4. Step 4: Simplify right side
    89,074,515.30x = 10,462,333,289,534,264
  5. Step 5: Solve for x
    x = 10,462,333,289,534,264/89,074,515.30
  6. Step 6: Final answer
    x = 117,455,966.55

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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.