Home / 85,691.42-128,369.73-59,032.70

Finding the Fourth Proportional to 85,691.42, 128,369.73 and 59,032.70

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Solution

The fourth proportional to 85,691.42, 128,369.73 and 59,032.70 is: 88,433.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,691.42 : 128,369.73 = 59,032.70 : x
  2. Step 2: Convert to fraction form
    85,691.42/128,369.73 = 59,032.70/x
  3. Step 3: Cross multiply
    85,691.42x = 128,369.73 × 59,032.70
  4. Step 4: Simplify right side
    85,691.42x = 7,578,011,760.17
  5. Step 5: Solve for x
    x = 7,578,011,760.17/85,691.42
  6. Step 6: Final answer
    x = 88,433.73

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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.