Home / 30,117.60-45,176.40-28,837.80

Finding the Fourth Proportional to 30,117.60, 45,176.40 and 28,837.80

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Solution

The fourth proportional to 30,117.60, 45,176.40 and 28,837.80 is: 43,256.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,117.60 : 45,176.40 = 28,837.80 : x
  2. Step 2: Convert to fraction form
    30,117.60/45,176.40 = 28,837.80/x
  3. Step 3: Cross multiply
    30,117.60x = 45,176.40 × 28,837.80
  4. Step 4: Simplify right side
    30,117.60x = 1,302,787,987.92
  5. Step 5: Solve for x
    x = 1,302,787,987.92/30,117.60
  6. Step 6: Final answer
    x = 43,256.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.