Home / 78,828.80-118,089.60-47,571.20

Finding the Fourth Proportional to 78,828.80, 118,089.60 and 47,571.20

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Solution

The fourth proportional to 78,828.80, 118,089.60 and 47,571.20 is: 71,264.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,828.80 : 118,089.60 = 47,571.20 : x
  2. Step 2: Convert to fraction form
    78,828.80/118,089.60 = 47,571.20/x
  3. Step 3: Cross multiply
    78,828.80x = 118,089.60 × 47,571.20
  4. Step 4: Simplify right side
    78,828.80x = 5,617,663,979.52
  5. Step 5: Solve for x
    x = 5,617,663,979.52/78,828.80
  6. Step 6: Final answer
    x = 71,264.11

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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.