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Finding the Fourth Proportional to 65,916.80, 98,831.52 and 36,348.80

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Solution

The fourth proportional to 65,916.80, 98,831.52 and 36,348.80 is: 54,499.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,916.80 : 98,831.52 = 36,348.80 : x
  2. Step 2: Convert to fraction form
    65,916.80/98,831.52 = 36,348.80/x
  3. Step 3: Cross multiply
    65,916.80x = 98,831.52 × 36,348.80
  4. Step 4: Simplify right side
    65,916.80x = 3,592,407,154.18
  5. Step 5: Solve for x
    x = 3,592,407,154.18/65,916.80
  6. Step 6: Final answer
    x = 54,499.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.