Home / 78,913.92-118,381.60-25,588.51

Finding the Fourth Proportional to 78,913.92, 118,381.60 and 25,588.51

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Solution

The fourth proportional to 78,913.92, 118,381.60 and 25,588.51 is: 38,386.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,913.92 : 118,381.60 = 25,588.51 : x
  2. Step 2: Convert to fraction form
    78,913.92/118,381.60 = 25,588.51/x
  3. Step 3: Cross multiply
    78,913.92x = 118,381.60 × 25,588.51
  4. Step 4: Simplify right side
    78,913.92x = 3,029,208,627.47
  5. Step 5: Solve for x
    x = 3,029,208,627.47/78,913.92
  6. Step 6: Final answer
    x = 38,386.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.