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Finding the Fourth Proportional to 32,702.50, 45,117.81 and 21,378.51

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Solution

The fourth proportional to 32,702.50, 45,117.81 and 21,378.51 is: 29,494.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,702.50 : 45,117.81 = 21,378.51 : x
  2. Step 2: Convert to fraction form
    32,702.50/45,117.81 = 21,378.51/x
  3. Step 3: Cross multiply
    32,702.50x = 45,117.81 × 21,378.51
  4. Step 4: Simplify right side
    32,702.50x = 964,551,552.26
  5. Step 5: Solve for x
    x = 964,551,552.26/32,702.50
  6. Step 6: Final answer
    x = 29,494.73

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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.