Home / 72,539.16-100,078.38-47,403.24

Finding the Fourth Proportional to 72,539.16, 100,078.38 and 47,403.24

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Solution

The fourth proportional to 72,539.16, 100,078.38 and 47,403.24 is: 65,399.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,539.16 : 100,078.38 = 47,403.24 : x
  2. Step 2: Convert to fraction form
    72,539.16/100,078.38 = 47,403.24/x
  3. Step 3: Cross multiply
    72,539.16x = 100,078.38 × 47,403.24
  4. Step 4: Simplify right side
    72,539.16x = 4,744,039,465.95
  5. Step 5: Solve for x
    x = 4,744,039,465.95/72,539.16
  6. Step 6: Final answer
    x = 65,399.70

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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.