Home / 76,734,135.60-115,101,203.40-66,432,490.80

Finding the Fourth Proportional to 76,734,135.60, 115,101,203.40 and 66,432,490.80

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Solution

The fourth proportional to 76,734,135.60, 115,101,203.40 and 66,432,490.80 is: 99,648,736.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,734,135.60 : 115,101,203.40 = 66,432,490.80 : x
  2. Step 2: Convert to fraction form
    76,734,135.60/115,101,203.40 = 66,432,490.80/x
  3. Step 3: Cross multiply
    76,734,135.60x = 115,101,203.40 × 66,432,490.80
  4. Step 4: Simplify right side
    76,734,135.60x = 7,646,459,635,939,429
  5. Step 5: Solve for x
    x = 7,646,459,635,939,429/76,734,135.60
  6. Step 6: Final answer
    x = 99,648,736.20

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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.