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Finding the Fourth Proportional to 70,513.48, 105,274.67 and 53,784.28

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Solution

The fourth proportional to 70,513.48, 105,274.67 and 53,784.28 is: 80,298.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,513.48 : 105,274.67 = 53,784.28 : x
  2. Step 2: Convert to fraction form
    70,513.48/105,274.67 = 53,784.28/x
  3. Step 3: Cross multiply
    70,513.48x = 105,274.67 × 53,784.28
  4. Step 4: Simplify right side
    70,513.48x = 5,662,122,328.19
  5. Step 5: Solve for x
    x = 5,662,122,328.19/70,513.48
  6. Step 6: Final answer
    x = 80,298.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.