Home / 72,917.94-100,631.49-40,656.18

Finding the Fourth Proportional to 72,917.94, 100,631.49 and 40,656.18

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Solution

The fourth proportional to 72,917.94, 100,631.49 and 40,656.18 is: 56,108.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,917.94 : 100,631.49 = 40,656.18 : x
  2. Step 2: Convert to fraction form
    72,917.94/100,631.49 = 40,656.18/x
  3. Step 3: Cross multiply
    72,917.94x = 100,631.49 × 40,656.18
  4. Step 4: Simplify right side
    72,917.94x = 4,091,291,971.11
  5. Step 5: Solve for x
    x = 4,091,291,971.11/72,917.94
  6. Step 6: Final answer
    x = 56,108.17

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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.