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Finding the Fourth Proportional to 81,841.64, 112,903.32 and 53,159.28

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Solution

The fourth proportional to 81,841.64, 112,903.32 and 53,159.28 is: 73,335.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,841.64 : 112,903.32 = 53,159.28 : x
  2. Step 2: Convert to fraction form
    81,841.64/112,903.32 = 53,159.28/x
  3. Step 3: Cross multiply
    81,841.64x = 112,903.32 × 53,159.28
  4. Step 4: Simplify right side
    81,841.64x = 6,001,859,200.81
  5. Step 5: Solve for x
    x = 6,001,859,200.81/81,841.64
  6. Step 6: Final answer
    x = 73,335.03

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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.