Home / 52,810.55-72,880.25-28,938.75

Finding the Fourth Proportional to 52,810.55, 72,880.25 and 28,938.75

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Solution

The fourth proportional to 52,810.55, 72,880.25 and 28,938.75 is: 39,936.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,810.55 : 72,880.25 = 28,938.75 : x
  2. Step 2: Convert to fraction form
    52,810.55/72,880.25 = 28,938.75/x
  3. Step 3: Cross multiply
    52,810.55x = 72,880.25 × 28,938.75
  4. Step 4: Simplify right side
    52,810.55x = 2,109,063,334.69
  5. Step 5: Solve for x
    x = 2,109,063,334.69/52,810.55
  6. Step 6: Final answer
    x = 39,936.40

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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.