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Finding the Fourth Proportional to 70,447.59, 105,677.53 and 17,857.07

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Solution

The fourth proportional to 70,447.59, 105,677.53 and 17,857.07 is: 26,787.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,447.59 : 105,677.53 = 17,857.07 : x
  2. Step 2: Convert to fraction form
    70,447.59/105,677.53 = 17,857.07/x
  3. Step 3: Cross multiply
    70,447.59x = 105,677.53 × 17,857.07
  4. Step 4: Simplify right side
    70,447.59x = 1,887,090,432.96
  5. Step 5: Solve for x
    x = 1,887,090,432.96/70,447.59
  6. Step 6: Final answer
    x = 26,787.16

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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.