Home / 76,960,515.20-115,440,772.80-70,018,102.40

Finding the Fourth Proportional to 76,960,515.20, 115,440,772.80 and 70,018,102.40

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Solution

The fourth proportional to 76,960,515.20, 115,440,772.80 and 70,018,102.40 is: 105,027,153.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,960,515.20 : 115,440,772.80 = 70,018,102.40 : x
  2. Step 2: Convert to fraction form
    76,960,515.20/115,440,772.80 = 70,018,102.40/x
  3. Step 3: Cross multiply
    76,960,515.20x = 115,440,772.80 × 70,018,102.40
  4. Step 4: Simplify right side
    76,960,515.20x = 8,082,943,851,045,535
  5. Step 5: Solve for x
    x = 8,082,943,851,045,535/76,960,515.20
  6. Step 6: Final answer
    x = 105,027,153.60

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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.