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Finding the Fourth Proportional to 81,412.59, 112,349.67 and 47,444.37

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Solution

The fourth proportional to 81,412.59, 112,349.67 and 47,444.37 is: 65,473.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,412.59 : 112,349.67 = 47,444.37 : x
  2. Step 2: Convert to fraction form
    81,412.59/112,349.67 = 47,444.37/x
  3. Step 3: Cross multiply
    81,412.59x = 112,349.67 × 47,444.37
  4. Step 4: Simplify right side
    81,412.59x = 5,330,359,312.86
  5. Step 5: Solve for x
    x = 5,330,359,312.86/81,412.59
  6. Step 6: Final answer
    x = 65,473.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.