Home / 83,531.04-115,271.76-47,720.76

Finding the Fourth Proportional to 83,531.04, 115,271.76 and 47,720.76

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Solution

The fourth proportional to 83,531.04, 115,271.76 and 47,720.76 is: 65,854.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,531.04 : 115,271.76 = 47,720.76 : x
  2. Step 2: Convert to fraction form
    83,531.04/115,271.76 = 47,720.76/x
  3. Step 3: Cross multiply
    83,531.04x = 115,271.76 × 47,720.76
  4. Step 4: Simplify right side
    83,531.04x = 5,500,855,993.74
  5. Step 5: Solve for x
    x = 5,500,855,993.74/83,531.04
  6. Step 6: Final answer
    x = 65,854.03

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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.