Home / 72,539.13-100,113.77-40,709.77

Finding the Fourth Proportional to 72,539.13, 100,113.77 and 40,709.77

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Solution

The fourth proportional to 72,539.13, 100,113.77 and 40,709.77 is: 56,184.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,539.13 : 100,113.77 = 40,709.77 : x
  2. Step 2: Convert to fraction form
    72,539.13/100,113.77 = 40,709.77/x
  3. Step 3: Cross multiply
    72,539.13x = 100,113.77 × 40,709.77
  4. Step 4: Simplify right side
    72,539.13x = 4,075,608,550.53
  5. Step 5: Solve for x
    x = 4,075,608,550.53/72,539.13
  6. Step 6: Final answer
    x = 56,184.97

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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.