Home / 42,748.68-64,124.12-20,254.10

Finding the Fourth Proportional to 42,748.68, 64,124.12 and 20,254.10

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Solution

The fourth proportional to 42,748.68, 64,124.12 and 20,254.10 is: 30,381.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,748.68 : 64,124.12 = 20,254.10 : x
  2. Step 2: Convert to fraction form
    42,748.68/64,124.12 = 20,254.10/x
  3. Step 3: Cross multiply
    42,748.68x = 64,124.12 × 20,254.10
  4. Step 4: Simplify right side
    42,748.68x = 1,298,775,917.00
  5. Step 5: Solve for x
    x = 1,298,775,917.00/42,748.68
  6. Step 6: Final answer
    x = 30,381.66

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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.