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Finding the Fourth Proportional to 98,459.60, 147,689.40 and 56,987.60

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Solution

The fourth proportional to 98,459.60, 147,689.40 and 56,987.60 is: 85,481.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,459.60 : 147,689.40 = 56,987.60 : x
  2. Step 2: Convert to fraction form
    98,459.60/147,689.40 = 56,987.60/x
  3. Step 3: Cross multiply
    98,459.60x = 147,689.40 × 56,987.60
  4. Step 4: Simplify right side
    98,459.60x = 8,416,464,451.44
  5. Step 5: Solve for x
    x = 8,416,464,451.44/98,459.60
  6. Step 6: Final answer
    x = 85,481.40

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1.5x scale

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.