Home / 85,398.34-128,008.22-29,219.58

Finding the Fourth Proportional to 85,398.34, 128,008.22 and 29,219.58

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Solution

The fourth proportional to 85,398.34, 128,008.22 and 29,219.58 is: 43,798.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,398.34 : 128,008.22 = 29,219.58 : x
  2. Step 2: Convert to fraction form
    85,398.34/128,008.22 = 29,219.58/x
  3. Step 3: Cross multiply
    85,398.34x = 128,008.22 × 29,219.58
  4. Step 4: Simplify right side
    85,398.34x = 3,740,346,424.95
  5. Step 5: Solve for x
    x = 3,740,346,424.95/85,398.34
  6. Step 6: Final answer
    x = 43,798.82

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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.