Home / 72,386.46-99,897.28-40,120.41

Finding the Fourth Proportional to 72,386.46, 99,897.28 and 40,120.41

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Solution

The fourth proportional to 72,386.46, 99,897.28 and 40,120.41 is: 55,368.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,386.46 : 99,897.28 = 40,120.41 : x
  2. Step 2: Convert to fraction form
    72,386.46/99,897.28 = 40,120.41/x
  3. Step 3: Cross multiply
    72,386.46x = 99,897.28 × 40,120.41
  4. Step 4: Simplify right side
    72,386.46x = 4,007,919,831.48
  5. Step 5: Solve for x
    x = 4,007,919,831.48/72,386.46
  6. Step 6: Final answer
    x = 55,368.37

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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.