Home / 42,763.96-64,159.88-20,579.12

Finding the Fourth Proportional to 42,763.96, 64,159.88 and 20,579.12

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Solution

The fourth proportional to 42,763.96, 64,159.88 and 20,579.12 is: 30,875.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,763.96 : 64,159.88 = 20,579.12 : x
  2. Step 2: Convert to fraction form
    42,763.96/64,159.88 = 20,579.12/x
  3. Step 3: Cross multiply
    42,763.96x = 64,159.88 × 20,579.12
  4. Step 4: Simplify right side
    42,763.96x = 1,320,353,869.71
  5. Step 5: Solve for x
    x = 1,320,353,869.71/42,763.96
  6. Step 6: Final answer
    x = 30,875.39

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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.