Home / 42,718.12-64,088.84-20,550.04

Finding the Fourth Proportional to 42,718.12, 64,088.84 and 20,550.04

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Solution

The fourth proportional to 42,718.12, 64,088.84 and 20,550.04 is: 30,830.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,718.12 : 64,088.84 = 20,550.04 : x
  2. Step 2: Convert to fraction form
    42,718.12/64,088.84 = 20,550.04/x
  3. Step 3: Cross multiply
    42,718.12x = 64,088.84 × 20,550.04
  4. Step 4: Simplify right side
    42,718.12x = 1,317,028,225.55
  5. Step 5: Solve for x
    x = 1,317,028,225.55/42,718.12
  6. Step 6: Final answer
    x = 30,830.67

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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.