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Finding the Fourth Proportional to 70,189.94, 105,254.94 and 40,628.18

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Solution

The fourth proportional to 70,189.94, 105,254.94 and 40,628.18 is: 60,924.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,189.94 : 105,254.94 = 40,628.18 : x
  2. Step 2: Convert to fraction form
    70,189.94/105,254.94 = 40,628.18/x
  3. Step 3: Cross multiply
    70,189.94x = 105,254.94 × 40,628.18
  4. Step 4: Simplify right side
    70,189.94x = 4,276,316,648.21
  5. Step 5: Solve for x
    x = 4,276,316,648.21/70,189.94
  6. Step 6: Final answer
    x = 60,924.92

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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.