Home / 85,602.23-128,376.12-29,428.83

Finding the Fourth Proportional to 85,602.23, 128,376.12 and 29,428.83

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Solution

The fourth proportional to 85,602.23, 128,376.12 and 29,428.83 is: 44,133.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,602.23 : 128,376.12 = 29,428.83 : x
  2. Step 2: Convert to fraction form
    85,602.23/128,376.12 = 29,428.83/x
  3. Step 3: Cross multiply
    85,602.23x = 128,376.12 × 29,428.83
  4. Step 4: Simplify right side
    85,602.23x = 3,777,959,011.54
  5. Step 5: Solve for x
    x = 3,777,959,011.54/85,602.23
  6. Step 6: Final answer
    x = 44,133.89

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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.