Home / 72,538.79-100,113.30-40,709.43

Finding the Fourth Proportional to 72,538.79, 100,113.30 and 40,709.43

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Solution

The fourth proportional to 72,538.79, 100,113.30 and 40,709.43 is: 56,184.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,538.79 : 100,113.30 = 40,709.43 : x
  2. Step 2: Convert to fraction form
    72,538.79/100,113.30 = 40,709.43/x
  3. Step 3: Cross multiply
    72,538.79x = 100,113.30 × 40,709.43
  4. Step 4: Simplify right side
    72,538.79x = 4,075,555,378.42
  5. Step 5: Solve for x
    x = 4,075,555,378.42/72,538.79
  6. Step 6: Final answer
    x = 56,184.50

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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.