Home / 85,812.18-118,420.80-52,278.18

Finding the Fourth Proportional to 85,812.18, 118,420.80 and 52,278.18

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Solution

The fourth proportional to 85,812.18, 118,420.80 and 52,278.18 is: 72,143.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,812.18 : 118,420.80 = 52,278.18 : x
  2. Step 2: Convert to fraction form
    85,812.18/118,420.80 = 52,278.18/x
  3. Step 3: Cross multiply
    85,812.18x = 118,420.80 × 52,278.18
  4. Step 4: Simplify right side
    85,812.18x = 6,190,823,898.14
  5. Step 5: Solve for x
    x = 6,190,823,898.14/85,812.18
  6. Step 6: Final answer
    x = 72,143.88

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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.