Home / 72,041.80-99,427.08-40,217.32

Finding the Fourth Proportional to 72,041.80, 99,427.08 and 40,217.32

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Solution

The fourth proportional to 72,041.80, 99,427.08 and 40,217.32 is: 55,505.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,041.80 : 99,427.08 = 40,217.32 : x
  2. Step 2: Convert to fraction form
    72,041.80/99,427.08 = 40,217.32/x
  3. Step 3: Cross multiply
    72,041.80x = 99,427.08 × 40,217.32
  4. Step 4: Simplify right side
    72,041.80x = 3,998,690,693.03
  5. Step 5: Solve for x
    x = 3,998,690,693.03/72,041.80
  6. Step 6: Final answer
    x = 55,505.15

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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.