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Finding the Fourth Proportional to 85,710.96, 118,264.56 and 55,492.08

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Solution

The fourth proportional to 85,710.96, 118,264.56 and 55,492.08 is: 76,568.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,710.96 : 118,264.56 = 55,492.08 : x
  2. Step 2: Convert to fraction form
    85,710.96/118,264.56 = 55,492.08/x
  3. Step 3: Cross multiply
    85,710.96x = 118,264.56 × 55,492.08
  4. Step 4: Simplify right side
    85,710.96x = 6,562,746,424.68
  5. Step 5: Solve for x
    x = 6,562,746,424.68/85,710.96
  6. Step 6: Final answer
    x = 76,568.35

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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.