Home / 85,803,429.60-128,705,144.40-45,492,645.60

Finding the Fourth Proportional to 85,803,429.60, 128,705,144.40 and 45,492,645.60

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Solution

The fourth proportional to 85,803,429.60, 128,705,144.40 and 45,492,645.60 is: 68,238,968.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,803,429.60 : 128,705,144.40 = 45,492,645.60 : x
  2. Step 2: Convert to fraction form
    85,803,429.60/128,705,144.40 = 45,492,645.60/x
  3. Step 3: Cross multiply
    85,803,429.60x = 128,705,144.40 × 45,492,645.60
  4. Step 4: Simplify right side
    85,803,429.60x = 5,855,137,521,086,025
  5. Step 5: Solve for x
    x = 5,855,137,521,086,025/85,803,429.60
  6. Step 6: Final answer
    x = 68,238,968.40

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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.