Home / 85,520,919.90-128,132,080.65-73,576,983.90

Finding the Fourth Proportional to 85,520,919.90, 128,132,080.65 and 73,576,983.90

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Solution

The fourth proportional to 85,520,919.90, 128,132,080.65 and 73,576,983.90 is: 110,237,027.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,520,919.90 : 128,132,080.65 = 73,576,983.90 : x
  2. Step 2: Convert to fraction form
    85,520,919.90/128,132,080.65 = 73,576,983.90/x
  3. Step 3: Cross multiply
    85,520,919.90x = 128,132,080.65 × 73,576,983.90
  4. Step 4: Simplify right side
    85,520,919.90x = 9,427,572,035,058,552
  5. Step 5: Solve for x
    x = 9,427,572,035,058,552/85,520,919.90
  6. Step 6: Final answer
    x = 110,237,027.92

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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.