Home / 72,599.12-100,186.40-40,770.80

Finding the Fourth Proportional to 72,599.12, 100,186.40 and 40,770.80

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Solution

The fourth proportional to 72,599.12, 100,186.40 and 40,770.80 is: 56,263.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,599.12 : 100,186.40 = 40,770.80 : x
  2. Step 2: Convert to fraction form
    72,599.12/100,186.40 = 40,770.80/x
  3. Step 3: Cross multiply
    72,599.12x = 100,186.40 × 40,770.80
  4. Step 4: Simplify right side
    72,599.12x = 4,084,679,677.12
  5. Step 5: Solve for x
    x = 4,084,679,677.12/72,599.12
  6. Step 6: Final answer
    x = 56,263.49

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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.