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Finding the Fourth Proportional to 85,730.40, 118,297.26 and 47,484.63

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Solution

The fourth proportional to 85,730.40, 118,297.26 and 47,484.63 is: 65,522.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,730.40 : 118,297.26 = 47,484.63 : x
  2. Step 2: Convert to fraction form
    85,730.40/118,297.26 = 47,484.63/x
  3. Step 3: Cross multiply
    85,730.40x = 118,297.26 × 47,484.63
  4. Step 4: Simplify right side
    85,730.40x = 5,617,301,621.11
  5. Step 5: Solve for x
    x = 5,617,301,621.11/85,730.40
  6. Step 6: Final answer
    x = 65,522.87

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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.