Home / 64,488.76-96,720.18-20,108.32

Finding the Fourth Proportional to 64,488.76, 96,720.18 and 20,108.32

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Solution

The fourth proportional to 64,488.76, 96,720.18 and 20,108.32 is: 30,158.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,488.76 : 96,720.18 = 20,108.32 : x
  2. Step 2: Convert to fraction form
    64,488.76/96,720.18 = 20,108.32/x
  3. Step 3: Cross multiply
    64,488.76x = 96,720.18 × 20,108.32
  4. Step 4: Simplify right side
    64,488.76x = 1,944,880,329.90
  5. Step 5: Solve for x
    x = 1,944,880,329.90/64,488.76
  6. Step 6: Final answer
    x = 30,158.44

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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.