Home / 77,291,461.20-115,937,191.80-73,974,219.60

Finding the Fourth Proportional to 77,291,461.20, 115,937,191.80 and 73,974,219.60

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Solution

The fourth proportional to 77,291,461.20, 115,937,191.80 and 73,974,219.60 is: 110,961,329.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,291,461.20 : 115,937,191.80 = 73,974,219.60 : x
  2. Step 2: Convert to fraction form
    77,291,461.20/115,937,191.80 = 73,974,219.60/x
  3. Step 3: Cross multiply
    77,291,461.20x = 115,937,191.80 × 73,974,219.60
  4. Step 4: Simplify right side
    77,291,461.20x = 8,576,363,286,020,518
  5. Step 5: Solve for x
    x = 8,576,363,286,020,518/77,291,461.20
  6. Step 6: Final answer
    x = 110,961,329.40

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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.