Home / 72,154.28-99,572.28-40,322.36

Finding the Fourth Proportional to 72,154.28, 99,572.28 and 40,322.36

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Solution

The fourth proportional to 72,154.28, 99,572.28 and 40,322.36 is: 55,644.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,154.28 : 99,572.28 = 40,322.36 : x
  2. Step 2: Convert to fraction form
    72,154.28/99,572.28 = 40,322.36/x
  3. Step 3: Cross multiply
    72,154.28x = 99,572.28 × 40,322.36
  4. Step 4: Simplify right side
    72,154.28x = 4,014,989,320.18
  5. Step 5: Solve for x
    x = 4,014,989,320.18/72,154.28
  6. Step 6: Final answer
    x = 55,644.51

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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.