Home / 55,813.60-83,720.40-18,877.60

Finding the Fourth Proportional to 55,813.60, 83,720.40 and 18,877.60

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Solution

The fourth proportional to 55,813.60, 83,720.40 and 18,877.60 is: 28,316.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,813.60 : 83,720.40 = 18,877.60 : x
  2. Step 2: Convert to fraction form
    55,813.60/83,720.40 = 18,877.60/x
  3. Step 3: Cross multiply
    55,813.60x = 83,720.40 × 18,877.60
  4. Step 4: Simplify right side
    55,813.60x = 1,580,440,223.04
  5. Step 5: Solve for x
    x = 1,580,440,223.04/55,813.60
  6. Step 6: Final answer
    x = 28,316.40

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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.