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Finding the Fourth Proportional to 98,575.60, 147,863.40 and 28,457.20

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Solution

The fourth proportional to 98,575.60, 147,863.40 and 28,457.20 is: 42,685.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,575.60 : 147,863.40 = 28,457.20 : x
  2. Step 2: Convert to fraction form
    98,575.60/147,863.40 = 28,457.20/x
  3. Step 3: Cross multiply
    98,575.60x = 147,863.40 × 28,457.20
  4. Step 4: Simplify right side
    98,575.60x = 4,207,778,346.48
  5. Step 5: Solve for x
    x = 4,207,778,346.48/98,575.60
  6. Step 6: Final answer
    x = 42,685.80

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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.