Home / 72,416.82-99,939.32-40,587.77

Finding the Fourth Proportional to 72,416.82, 99,939.32 and 40,587.77

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Solution

The fourth proportional to 72,416.82, 99,939.32 and 40,587.77 is: 56,013.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,416.82 : 99,939.32 = 40,587.77 : x
  2. Step 2: Convert to fraction form
    72,416.82/99,939.32 = 40,587.77/x
  3. Step 3: Cross multiply
    72,416.82x = 99,939.32 × 40,587.77
  4. Step 4: Simplify right side
    72,416.82x = 4,056,314,134.12
  5. Step 5: Solve for x
    x = 4,056,314,134.12/72,416.82
  6. Step 6: Final answer
    x = 56,013.43

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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.