Home / 80,289.66-120,652.38-42,875.76

Finding the Fourth Proportional to 80,289.66, 120,652.38 and 42,875.76

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Solution

The fourth proportional to 80,289.66, 120,652.38 and 42,875.76 is: 64,430.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,289.66 : 120,652.38 = 42,875.76 : x
  2. Step 2: Convert to fraction form
    80,289.66/120,652.38 = 42,875.76/x
  3. Step 3: Cross multiply
    80,289.66x = 120,652.38 × 42,875.76
  4. Step 4: Simplify right side
    80,289.66x = 5,173,062,488.31
  5. Step 5: Solve for x
    x = 5,173,062,488.31/80,289.66
  6. Step 6: Final answer
    x = 64,430.00

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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.