Home / 72,646.10-100,240.46-40,808.84

Finding the Fourth Proportional to 72,646.10, 100,240.46 and 40,808.84

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Solution

The fourth proportional to 72,646.10, 100,240.46 and 40,808.84 is: 56,309.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,646.10 : 100,240.46 = 40,808.84 : x
  2. Step 2: Convert to fraction form
    72,646.10/100,240.46 = 40,808.84/x
  3. Step 3: Cross multiply
    72,646.10x = 100,240.46 × 40,808.84
  4. Step 4: Simplify right side
    72,646.10x = 4,090,696,893.67
  5. Step 5: Solve for x
    x = 4,090,696,893.67/72,646.10
  6. Step 6: Final answer
    x = 56,309.93

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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.