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Finding the Fourth Proportional to 98,272.20, 147,335.40 and 42,066.30

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Solution

The fourth proportional to 98,272.20, 147,335.40 and 42,066.30 is: 63,068.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,272.20 : 147,335.40 = 42,066.30 : x
  2. Step 2: Convert to fraction form
    98,272.20/147,335.40 = 42,066.30/x
  3. Step 3: Cross multiply
    98,272.20x = 147,335.40 × 42,066.30
  4. Step 4: Simplify right side
    98,272.20x = 6,197,855,137.02
  5. Step 5: Solve for x
    x = 6,197,855,137.02/98,272.20
  6. Step 6: Final answer
    x = 63,068.24

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