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Finding the Fourth Proportional to 85,602.60, 128,298.72 and 48,083.80

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Solution

The fourth proportional to 85,602.60, 128,298.72 and 48,083.80 is: 72,066.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,602.60 : 128,298.72 = 48,083.80 : x
  2. Step 2: Convert to fraction form
    85,602.60/128,298.72 = 48,083.80/x
  3. Step 3: Cross multiply
    85,602.60x = 128,298.72 × 48,083.80
  4. Step 4: Simplify right side
    85,602.60x = 6,169,089,992.74
  5. Step 5: Solve for x
    x = 6,169,089,992.74/85,602.60
  6. Step 6: Final answer
    x = 72,066.62

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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.