Home / 85,275.64-117,678.78-47,038.78

Finding the Fourth Proportional to 85,275.64, 117,678.78 and 47,038.78

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Solution

The fourth proportional to 85,275.64, 117,678.78 and 47,038.78 is: 64,912.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,275.64 : 117,678.78 = 47,038.78 : x
  2. Step 2: Convert to fraction form
    85,275.64/117,678.78 = 47,038.78/x
  3. Step 3: Cross multiply
    85,275.64x = 117,678.78 × 47,038.78
  4. Step 4: Simplify right side
    85,275.64x = 5,535,466,243.09
  5. Step 5: Solve for x
    x = 5,535,466,243.09/85,275.64
  6. Step 6: Final answer
    x = 64,912.63

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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.