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Finding the Fourth Proportional to 91,484.80, 137,313.60 and 56,492.80

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Solution

The fourth proportional to 91,484.80, 137,313.60 and 56,492.80 is: 84,792.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,484.80 : 137,313.60 = 56,492.80 : x
  2. Step 2: Convert to fraction form
    91,484.80/137,313.60 = 56,492.80/x
  3. Step 3: Cross multiply
    91,484.80x = 137,313.60 × 56,492.80
  4. Step 4: Simplify right side
    91,484.80x = 7,757,229,742.08
  5. Step 5: Solve for x
    x = 7,757,229,742.08/91,484.80
  6. Step 6: Final answer
    x = 84,792.55

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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.