Home / 72,712.04-100,342.01-40,881.07

Finding the Fourth Proportional to 72,712.04, 100,342.01 and 40,881.07

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Solution

The fourth proportional to 72,712.04, 100,342.01 and 40,881.07 is: 56,415.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,712.04 : 100,342.01 = 40,881.07 : x
  2. Step 2: Convert to fraction form
    72,712.04/100,342.01 = 40,881.07/x
  3. Step 3: Cross multiply
    72,712.04x = 100,342.01 × 40,881.07
  4. Step 4: Simplify right side
    72,712.04x = 4,102,088,028.64
  5. Step 5: Solve for x
    x = 4,102,088,028.64/72,712.04
  6. Step 6: Final answer
    x = 56,415.53

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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.