Home / 85,803,563.10-128,705,344.65-45,492,779.10

Finding the Fourth Proportional to 85,803,563.10, 128,705,344.65 and 45,492,779.10

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Solution

The fourth proportional to 85,803,563.10, 128,705,344.65 and 45,492,779.10 is: 68,239,168.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,803,563.10 : 128,705,344.65 = 45,492,779.10 : x
  2. Step 2: Convert to fraction form
    85,803,563.10/128,705,344.65 = 45,492,779.10/x
  3. Step 3: Cross multiply
    85,803,563.10x = 128,705,344.65 × 45,492,779.10
  4. Step 4: Simplify right side
    85,803,563.10x = 5,855,163,813,151,817
  5. Step 5: Solve for x
    x = 5,855,163,813,151,817/85,803,563.10
  6. Step 6: Final answer
    x = 68,239,168.65

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Similar ratio
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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.