Home / 61,690.05-92,561.40-30,128.00

Finding the Fourth Proportional to 61,690.05, 92,561.40 and 30,128.00

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Solution

The fourth proportional to 61,690.05, 92,561.40 and 30,128.00 is: 45,204.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,690.05 : 92,561.40 = 30,128.00 : x
  2. Step 2: Convert to fraction form
    61,690.05/92,561.40 = 30,128.00/x
  3. Step 3: Cross multiply
    61,690.05x = 92,561.40 × 30,128.00
  4. Step 4: Simplify right side
    61,690.05x = 2,788,689,396.39
  5. Step 5: Solve for x
    x = 2,788,689,396.39/61,690.05
  6. Step 6: Final answer
    x = 45,204.85

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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.