Home / 42,803.70-64,205.55-30,337.80

Finding the Fourth Proportional to 42,803.70, 64,205.55 and 30,337.80

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Solution

The fourth proportional to 42,803.70, 64,205.55 and 30,337.80 is: 45,506.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,803.70 : 64,205.55 = 30,337.80 : x
  2. Step 2: Convert to fraction form
    42,803.70/64,205.55 = 30,337.80/x
  3. Step 3: Cross multiply
    42,803.70x = 64,205.55 × 30,337.80
  4. Step 4: Simplify right side
    42,803.70x = 1,947,855,134.79
  5. Step 5: Solve for x
    x = 1,947,855,134.79/42,803.70
  6. Step 6: Final answer
    x = 45,506.70

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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.