Home / 72,759.12-100,406.10-42,562.32

Finding the Fourth Proportional to 72,759.12, 100,406.10 and 42,562.32

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Solution

The fourth proportional to 72,759.12, 100,406.10 and 42,562.32 is: 58,735.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,759.12 : 100,406.10 = 42,562.32 : x
  2. Step 2: Convert to fraction form
    72,759.12/100,406.10 = 42,562.32/x
  3. Step 3: Cross multiply
    72,759.12x = 100,406.10 × 42,562.32
  4. Step 4: Simplify right side
    72,759.12x = 4,273,516,558.15
  5. Step 5: Solve for x
    x = 4,273,516,558.15/72,759.12
  6. Step 6: Final answer
    x = 58,735.13

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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.