Home / 85,868.91-118,490.65-47,627.80

Finding the Fourth Proportional to 85,868.91, 118,490.65 and 47,627.80

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Solution

The fourth proportional to 85,868.91, 118,490.65 and 47,627.80 is: 65,721.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,868.91 : 118,490.65 = 47,627.80 : x
  2. Step 2: Convert to fraction form
    85,868.91/118,490.65 = 47,627.80/x
  3. Step 3: Cross multiply
    85,868.91x = 118,490.65 × 47,627.80
  4. Step 4: Simplify right side
    85,868.91x = 5,643,448,564.77
  5. Step 5: Solve for x
    x = 5,643,448,564.77/85,868.91
  6. Step 6: Final answer
    x = 65,721.67

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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.