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Finding the Fourth Proportional to 92,770.48, 128,014.80 and 52,487.92

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Solution

The fourth proportional to 92,770.48, 128,014.80 and 52,487.92 is: 72,428.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,770.48 : 128,014.80 = 52,487.92 : x
  2. Step 2: Convert to fraction form
    92,770.48/128,014.80 = 52,487.92/x
  3. Step 3: Cross multiply
    92,770.48x = 128,014.80 × 52,487.92
  4. Step 4: Simplify right side
    92,770.48x = 6,719,230,581.22
  5. Step 5: Solve for x
    x = 6,719,230,581.22/92,770.48
  6. Step 6: Final answer
    x = 72,428.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.