Home / 66,561.28-99,792.66-31,459.96

Finding the Fourth Proportional to 66,561.28, 99,792.66 and 31,459.96

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Solution

The fourth proportional to 66,561.28, 99,792.66 and 31,459.96 is: 47,166.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,561.28 : 99,792.66 = 31,459.96 : x
  2. Step 2: Convert to fraction form
    66,561.28/99,792.66 = 31,459.96/x
  3. Step 3: Cross multiply
    66,561.28x = 99,792.66 × 31,459.96
  4. Step 4: Simplify right side
    66,561.28x = 3,139,473,091.89
  5. Step 5: Solve for x
    x = 3,139,473,091.89/66,561.28
  6. Step 6: Final answer
    x = 47,166.66

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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.