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Finding the Fourth Proportional to 70,381.36, 105,043.43 and 60,851.52

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Solution

The fourth proportional to 70,381.36, 105,043.43 and 60,851.52 is: 90,820.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,381.36 : 105,043.43 = 60,851.52 : x
  2. Step 2: Convert to fraction form
    70,381.36/105,043.43 = 60,851.52/x
  3. Step 3: Cross multiply
    70,381.36x = 105,043.43 × 60,851.52
  4. Step 4: Simplify right side
    70,381.36x = 6,392,052,381.51
  5. Step 5: Solve for x
    x = 6,392,052,381.51/70,381.36
  6. Step 6: Final answer
    x = 90,820.25

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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.