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Finding the Fourth Proportional to 76,162.96, 105,071.80 and 45,931.48

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Solution

The fourth proportional to 76,162.96, 105,071.80 and 45,931.48 is: 63,365.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,162.96 : 105,071.80 = 45,931.48 : x
  2. Step 2: Convert to fraction form
    76,162.96/105,071.80 = 45,931.48/x
  3. Step 3: Cross multiply
    76,162.96x = 105,071.80 × 45,931.48
  4. Step 4: Simplify right side
    76,162.96x = 4,826,103,280.26
  5. Step 5: Solve for x
    x = 4,826,103,280.26/76,162.96
  6. Step 6: Final answer
    x = 63,365.49

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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.