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Finding the Fourth Proportional to 85,607.48, 118,141.80 and 47,366.40

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Solution

The fourth proportional to 85,607.48, 118,141.80 and 47,366.40 is: 65,367.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,607.48 : 118,141.80 = 47,366.40 : x
  2. Step 2: Convert to fraction form
    85,607.48/118,141.80 = 47,366.40/x
  3. Step 3: Cross multiply
    85,607.48x = 118,141.80 × 47,366.40
  4. Step 4: Simplify right side
    85,607.48x = 5,595,952,478.58
  5. Step 5: Solve for x
    x = 5,595,952,478.58/85,607.48
  6. Step 6: Final answer
    x = 65,367.57

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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.