Home / 70,381.85-97,128.53-40,166.57

Finding the Fourth Proportional to 70,381.85, 97,128.53 and 40,166.57

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Solution

The fourth proportional to 70,381.85, 97,128.53 and 40,166.57 is: 55,430.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,381.85 : 97,128.53 = 40,166.57 : x
  2. Step 2: Convert to fraction form
    70,381.85/97,128.53 = 40,166.57/x
  3. Step 3: Cross multiply
    70,381.85x = 97,128.53 × 40,166.57
  4. Step 4: Simplify right side
    70,381.85x = 3,901,319,212.77
  5. Step 5: Solve for x
    x = 3,901,319,212.77/70,381.85
  6. Step 6: Final answer
    x = 55,430.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.