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Finding the Fourth Proportional to 70,004.79, 105,007.19 and 25,612.34

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Solution

The fourth proportional to 70,004.79, 105,007.19 and 25,612.34 is: 38,418.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,004.79 : 105,007.19 = 25,612.34 : x
  2. Step 2: Convert to fraction form
    70,004.79/105,007.19 = 25,612.34/x
  3. Step 3: Cross multiply
    70,004.79x = 105,007.19 × 25,612.34
  4. Step 4: Simplify right side
    70,004.79x = 2,689,479,199.63
  5. Step 5: Solve for x
    x = 2,689,479,199.63/70,004.79
  6. Step 6: Final answer
    x = 38,418.50

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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.