Home / 72,341.28-99,831.96-40,509.90

Finding the Fourth Proportional to 72,341.28, 99,831.96 and 40,509.90

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Solution

The fourth proportional to 72,341.28, 99,831.96 and 40,509.90 is: 55,904.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,341.28 : 99,831.96 = 40,509.90 : x
  2. Step 2: Convert to fraction form
    72,341.28/99,831.96 = 40,509.90/x
  3. Step 3: Cross multiply
    72,341.28x = 99,831.96 × 40,509.90
  4. Step 4: Simplify right side
    72,341.28x = 4,044,182,716.40
  5. Step 5: Solve for x
    x = 4,044,182,716.40/72,341.28
  6. Step 6: Final answer
    x = 55,904.22

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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.