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Finding the Fourth Proportional to 85,130.82, 117,484.17 and 47,405.07

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Solution

The fourth proportional to 85,130.82, 117,484.17 and 47,405.07 is: 65,421.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,130.82 : 117,484.17 = 47,405.07 : x
  2. Step 2: Convert to fraction form
    85,130.82/117,484.17 = 47,405.07/x
  3. Step 3: Cross multiply
    85,130.82x = 117,484.17 × 47,405.07
  4. Step 4: Simplify right side
    85,130.82x = 5,569,345,302.74
  5. Step 5: Solve for x
    x = 5,569,345,302.74/85,130.82
  6. Step 6: Final answer
    x = 65,421.02

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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.