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Finding the Fourth Proportional to 85,852.68, 118,510.26 and 65,708.36

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Solution

The fourth proportional to 85,852.68, 118,510.26 and 65,708.36 is: 90,703.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,852.68 : 118,510.26 = 65,708.36 : x
  2. Step 2: Convert to fraction form
    85,852.68/118,510.26 = 65,708.36/x
  3. Step 3: Cross multiply
    85,852.68x = 118,510.26 × 65,708.36
  4. Step 4: Simplify right side
    85,852.68x = 7,787,114,827.77
  5. Step 5: Solve for x
    x = 7,787,114,827.77/85,852.68
  6. Step 6: Final answer
    x = 90,703.22

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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.