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Finding the Fourth Proportional to 53,310.40, 79,892.70 and 35,490.40

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Solution

The fourth proportional to 53,310.40, 79,892.70 and 35,490.40 is: 53,187.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,310.40 : 79,892.70 = 35,490.40 : x
  2. Step 2: Convert to fraction form
    53,310.40/79,892.70 = 35,490.40/x
  3. Step 3: Cross multiply
    53,310.40x = 79,892.70 × 35,490.40
  4. Step 4: Simplify right side
    53,310.40x = 2,835,423,880.08
  5. Step 5: Solve for x
    x = 2,835,423,880.08/53,310.40
  6. Step 6: Final answer
    x = 53,187.07

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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.