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Finding the Fourth Proportional to 53,391.60, 80,068.55 and 23,420.40

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Solution

The fourth proportional to 53,391.60, 80,068.55 and 23,420.40 is: 35,122.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,391.60 : 80,068.55 = 23,420.40 : x
  2. Step 2: Convert to fraction form
    53,391.60/80,068.55 = 23,420.40/x
  3. Step 3: Cross multiply
    53,391.60x = 80,068.55 × 23,420.40
  4. Step 4: Simplify right side
    53,391.60x = 1,875,237,068.08
  5. Step 5: Solve for x
    x = 1,875,237,068.08/53,391.60
  6. Step 6: Final answer
    x = 35,122.32

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1.5x scale

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.