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Finding the Fourth Proportional to 70,285.47, 105,411.64 and 25,888.11

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Solution

The fourth proportional to 70,285.47, 105,411.64 and 25,888.11 is: 38,826.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,285.47 : 105,411.64 = 25,888.11 : x
  2. Step 2: Convert to fraction form
    70,285.47/105,411.64 = 25,888.11/x
  3. Step 3: Cross multiply
    70,285.47x = 105,411.64 × 25,888.11
  4. Step 4: Simplify right side
    70,285.47x = 2,728,907,539.82
  5. Step 5: Solve for x
    x = 2,728,907,539.82/70,285.47
  6. Step 6: Final answer
    x = 38,826.06

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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.