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Finding the Fourth Proportional to 55,335.60, 82,873.80 and 42,116.40

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Solution

The fourth proportional to 55,335.60, 82,873.80 and 42,116.40 is: 63,075.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,335.60 : 82,873.80 = 42,116.40 : x
  2. Step 2: Convert to fraction form
    55,335.60/82,873.80 = 42,116.40/x
  3. Step 3: Cross multiply
    55,335.60x = 82,873.80 × 42,116.40
  4. Step 4: Simplify right side
    55,335.60x = 3,490,346,110.32
  5. Step 5: Solve for x
    x = 3,490,346,110.32/55,335.60
  6. Step 6: Final answer
    x = 63,075.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.