Home / 72,007.20-108,010.80-52,178.40

Finding the Fourth Proportional to 72,007.20, 108,010.80 and 52,178.40

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Solution

The fourth proportional to 72,007.20, 108,010.80 and 52,178.40 is: 78,267.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,007.20 : 108,010.80 = 52,178.40 : x
  2. Step 2: Convert to fraction form
    72,007.20/108,010.80 = 52,178.40/x
  3. Step 3: Cross multiply
    72,007.20x = 108,010.80 × 52,178.40
  4. Step 4: Simplify right side
    72,007.20x = 5,635,830,726.72
  5. Step 5: Solve for x
    x = 5,635,830,726.72/72,007.20
  6. Step 6: Final answer
    x = 78,267.60

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1.5x scale

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.