Home / 72,236.74-99,681.28-40,399.48

Finding the Fourth Proportional to 72,236.74, 99,681.28 and 40,399.48

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Solution

The fourth proportional to 72,236.74, 99,681.28 and 40,399.48 is: 55,748.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,236.74 : 99,681.28 = 40,399.48 : x
  2. Step 2: Convert to fraction form
    72,236.74/99,681.28 = 40,399.48/x
  3. Step 3: Cross multiply
    72,236.74x = 99,681.28 × 40,399.48
  4. Step 4: Simplify right side
    72,236.74x = 4,027,071,877.73
  5. Step 5: Solve for x
    x = 4,027,071,877.73/72,236.74
  6. Step 6: Final answer
    x = 55,748.25

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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.