Home / 85,803,554.10-128,705,331.15-45,492,770.10

Finding the Fourth Proportional to 85,803,554.10, 128,705,331.15 and 45,492,770.10

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Solution

The fourth proportional to 85,803,554.10, 128,705,331.15 and 45,492,770.10 is: 68,239,155.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,803,554.10 : 128,705,331.15 = 45,492,770.10 : x
  2. Step 2: Convert to fraction form
    85,803,554.10/128,705,331.15 = 45,492,770.10/x
  3. Step 3: Cross multiply
    85,803,554.10x = 128,705,331.15 × 45,492,770.10
  4. Step 4: Simplify right side
    85,803,554.10x = 5,855,162,040,651,319
  5. Step 5: Solve for x
    x = 5,855,162,040,651,319/85,803,554.10
  6. Step 6: Final answer
    x = 68,239,155.15

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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.