Home / 42,759.96-64,153.88-20,575.12

Finding the Fourth Proportional to 42,759.96, 64,153.88 and 20,575.12

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Solution

The fourth proportional to 42,759.96, 64,153.88 and 20,575.12 is: 30,869.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,759.96 : 64,153.88 = 20,575.12 : x
  2. Step 2: Convert to fraction form
    42,759.96/64,153.88 = 20,575.12/x
  3. Step 3: Cross multiply
    42,759.96x = 64,153.88 × 20,575.12
  4. Step 4: Simplify right side
    42,759.96x = 1,319,973,779.47
  5. Step 5: Solve for x
    x = 1,319,973,779.47/42,759.96
  6. Step 6: Final answer
    x = 30,869.39

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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.