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Finding the Fourth Proportional to 70,246.36, 105,411.12 and 25,904.32

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Solution

The fourth proportional to 70,246.36, 105,411.12 and 25,904.32 is: 38,871.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,246.36 : 105,411.12 = 25,904.32 : x
  2. Step 2: Convert to fraction form
    70,246.36/105,411.12 = 25,904.32/x
  3. Step 3: Cross multiply
    70,246.36x = 105,411.12 × 25,904.32
  4. Step 4: Simplify right side
    70,246.36x = 2,730,603,384.04
  5. Step 5: Solve for x
    x = 2,730,603,384.04/70,246.36
  6. Step 6: Final answer
    x = 38,871.81

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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.