Home / 85,531.74-118,031.49-47,813.28

Finding the Fourth Proportional to 85,531.74, 118,031.49 and 47,813.28

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Solution

The fourth proportional to 85,531.74, 118,031.49 and 47,813.28 is: 65,981.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,531.74 : 118,031.49 = 47,813.28 : x
  2. Step 2: Convert to fraction form
    85,531.74/118,031.49 = 47,813.28/x
  3. Step 3: Cross multiply
    85,531.74x = 118,031.49 × 47,813.28
  4. Step 4: Simplify right side
    85,531.74x = 5,643,472,680.19
  5. Step 5: Solve for x
    x = 5,643,472,680.19/85,531.74
  6. Step 6: Final answer
    x = 65,981.03

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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.