Home / 42,700.38-64,050.57-20,499.90

Finding the Fourth Proportional to 42,700.38, 64,050.57 and 20,499.90

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Solution

The fourth proportional to 42,700.38, 64,050.57 and 20,499.90 is: 30,749.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,700.38 : 64,050.57 = 20,499.90 : x
  2. Step 2: Convert to fraction form
    42,700.38/64,050.57 = 20,499.90/x
  3. Step 3: Cross multiply
    42,700.38x = 64,050.57 × 20,499.90
  4. Step 4: Simplify right side
    42,700.38x = 1,313,030,279.94
  5. Step 5: Solve for x
    x = 1,313,030,279.94/42,700.38
  6. Step 6: Final answer
    x = 30,749.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.