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Finding the Fourth Proportional to 72,569.80, 100,150.80 and 48,329.20

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Solution

The fourth proportional to 72,569.80, 100,150.80 and 48,329.20 is: 66,697.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,569.80 : 100,150.80 = 48,329.20 : x
  2. Step 2: Convert to fraction form
    72,569.80/100,150.80 = 48,329.20/x
  3. Step 3: Cross multiply
    72,569.80x = 100,150.80 × 48,329.20
  4. Step 4: Simplify right side
    72,569.80x = 4,840,208,043.36
  5. Step 5: Solve for x
    x = 4,840,208,043.36/72,569.80
  6. Step 6: Final answer
    x = 66,697.28

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1.5x scale

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.