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Finding the Fourth Proportional to 85,695.71, 118,223.39 and 51,684.84

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Solution

The fourth proportional to 85,695.71, 118,223.39 and 51,684.84 is: 71,302.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,695.71 : 118,223.39 = 51,684.84 : x
  2. Step 2: Convert to fraction form
    85,695.71/118,223.39 = 51,684.84/x
  3. Step 3: Cross multiply
    85,695.71x = 118,223.39 × 51,684.84
  4. Step 4: Simplify right side
    85,695.71x = 6,110,356,737.98
  5. Step 5: Solve for x
    x = 6,110,356,737.98/85,695.71
  6. Step 6: Final answer
    x = 71,302.95

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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.