Home / 72,138.08-99,431.60-48,256.16

Finding the Fourth Proportional to 72,138.08, 99,431.60 and 48,256.16

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Solution

The fourth proportional to 72,138.08, 99,431.60 and 48,256.16 is: 66,513.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,138.08 : 99,431.60 = 48,256.16 : x
  2. Step 2: Convert to fraction form
    72,138.08/99,431.60 = 48,256.16/x
  3. Step 3: Cross multiply
    72,138.08x = 99,431.60 × 48,256.16
  4. Step 4: Simplify right side
    72,138.08x = 4,798,187,198.66
  5. Step 5: Solve for x
    x = 4,798,187,198.66/72,138.08
  6. Step 6: Final answer
    x = 66,513.93

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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.