Home / 72,280.08-108,421.56-19,690.92

Finding the Fourth Proportional to 72,280.08, 108,421.56 and 19,690.92

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Solution

The fourth proportional to 72,280.08, 108,421.56 and 19,690.92 is: 29,536.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,280.08 : 108,421.56 = 19,690.92 : x
  2. Step 2: Convert to fraction form
    72,280.08/108,421.56 = 19,690.92/x
  3. Step 3: Cross multiply
    72,280.08x = 108,421.56 × 19,690.92
  4. Step 4: Simplify right side
    72,280.08x = 2,134,920,264.24
  5. Step 5: Solve for x
    x = 2,134,920,264.24/72,280.08
  6. Step 6: Final answer
    x = 29,536.77

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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.