Home / 85,796.20-128,686.38-29,631.16

Finding the Fourth Proportional to 85,796.20, 128,686.38 and 29,631.16

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Solution

The fourth proportional to 85,796.20, 128,686.38 and 29,631.16 is: 44,444.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,796.20 : 128,686.38 = 29,631.16 : x
  2. Step 2: Convert to fraction form
    85,796.20/128,686.38 = 29,631.16/x
  3. Step 3: Cross multiply
    85,796.20x = 128,686.38 × 29,631.16
  4. Step 4: Simplify right side
    85,796.20x = 3,813,126,715.60
  5. Step 5: Solve for x
    x = 3,813,126,715.60/85,796.20
  6. Step 6: Final answer
    x = 44,444.00

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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.