Home / 85,397.34-128,006.72-29,218.58

Finding the Fourth Proportional to 85,397.34, 128,006.72 and 29,218.58

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Solution

The fourth proportional to 85,397.34, 128,006.72 and 29,218.58 is: 43,797.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,397.34 : 128,006.72 = 29,218.58 : x
  2. Step 2: Convert to fraction form
    85,397.34/128,006.72 = 29,218.58/x
  3. Step 3: Cross multiply
    85,397.34x = 128,006.72 × 29,218.58
  4. Step 4: Simplify right side
    85,397.34x = 3,740,174,588.86
  5. Step 5: Solve for x
    x = 3,740,174,588.86/85,397.34
  6. Step 6: Final answer
    x = 43,797.32

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1.5x scale

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.