Home / 72,816.84-100,475.28-42,179.04

Finding the Fourth Proportional to 72,816.84, 100,475.28 and 42,179.04

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Solution

The fourth proportional to 72,816.84, 100,475.28 and 42,179.04 is: 58,200.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,816.84 : 100,475.28 = 42,179.04 : x
  2. Step 2: Convert to fraction form
    72,816.84/100,475.28 = 42,179.04/x
  3. Step 3: Cross multiply
    72,816.84x = 100,475.28 × 42,179.04
  4. Step 4: Simplify right side
    72,816.84x = 4,237,950,854.13
  5. Step 5: Solve for x
    x = 4,237,950,854.13/72,816.84
  6. Step 6: Final answer
    x = 58,200.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.