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Finding the Fourth Proportional to 81,841.60, 112,903.26 and 53,159.32

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Solution

The fourth proportional to 81,841.60, 112,903.26 and 53,159.32 is: 73,335.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,841.60 : 112,903.26 = 53,159.32 : x
  2. Step 2: Convert to fraction form
    81,841.60/112,903.26 = 53,159.32/x
  3. Step 3: Cross multiply
    81,841.60x = 112,903.26 × 53,159.32
  4. Step 4: Simplify right side
    81,841.60x = 6,001,860,527.38
  5. Step 5: Solve for x
    x = 6,001,860,527.38/81,841.60
  6. Step 6: Final answer
    x = 73,335.08

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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.