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Finding the Fourth Proportional to 72,366.78, 99,900.36 and 48,509.04

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Solution

The fourth proportional to 72,366.78, 99,900.36 and 48,509.04 is: 66,965.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,366.78 : 99,900.36 = 48,509.04 : x
  2. Step 2: Convert to fraction form
    72,366.78/99,900.36 = 48,509.04/x
  3. Step 3: Cross multiply
    72,366.78x = 99,900.36 × 48,509.04
  4. Step 4: Simplify right side
    72,366.78x = 4,846,070,559.25
  5. Step 5: Solve for x
    x = 4,846,070,559.25/72,366.78
  6. Step 6: Final answer
    x = 66,965.40

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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.