Home / 78,915.92-118,430.51-53,552.21

Finding the Fourth Proportional to 78,915.92, 118,430.51 and 53,552.21

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Solution

The fourth proportional to 78,915.92, 118,430.51 and 53,552.21 is: 80,366.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,915.92 : 118,430.51 = 53,552.21 : x
  2. Step 2: Convert to fraction form
    78,915.92/118,430.51 = 53,552.21/x
  3. Step 3: Cross multiply
    78,915.92x = 118,430.51 × 53,552.21
  4. Step 4: Simplify right side
    78,915.92x = 6,342,214,682.01
  5. Step 5: Solve for x
    x = 6,342,214,682.01/78,915.92
  6. Step 6: Final answer
    x = 80,366.74

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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.