Home / 85,431.51-117,897.26-47,705.76

Finding the Fourth Proportional to 85,431.51, 117,897.26 and 47,705.76

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Solution

The fourth proportional to 85,431.51, 117,897.26 and 47,705.76 is: 65,834.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,431.51 : 117,897.26 = 47,705.76 : x
  2. Step 2: Convert to fraction form
    85,431.51/117,897.26 = 47,705.76/x
  3. Step 3: Cross multiply
    85,431.51x = 117,897.26 × 47,705.76
  4. Step 4: Simplify right side
    85,431.51x = 5,624,378,151.69
  5. Step 5: Solve for x
    x = 5,624,378,151.69/85,431.51
  6. Step 6: Final answer
    x = 65,834.94

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1.5x scale

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.