Home / 83,987.68-115,902-45,747.10

Finding the Fourth Proportional to 83,987.68, 115,902 and 45,747.10

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Solution

The fourth proportional to 83,987.68, 115,902 and 45,747.10 is: 63,130.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,987.68 : 115,902 = 45,747.10 : x
  2. Step 2: Convert to fraction form
    83,987.68/115,902 = 45,747.10/x
  3. Step 3: Cross multiply
    83,987.68x = 115,902 × 45,747.10
  4. Step 4: Simplify right side
    83,987.68x = 5,302,180,818.83
  5. Step 5: Solve for x
    x = 5,302,180,818.83/83,987.68
  6. Step 6: Final answer
    x = 63,130.46

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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.