Home / 45,117.12-67,683.90-15,128.40

Finding the Fourth Proportional to 45,117.12, 67,683.90 and 15,128.40

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Solution

The fourth proportional to 45,117.12, 67,683.90 and 15,128.40 is: 22,695.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,117.12 : 67,683.90 = 15,128.40 : x
  2. Step 2: Convert to fraction form
    45,117.12/67,683.90 = 15,128.40/x
  3. Step 3: Cross multiply
    45,117.12x = 67,683.90 × 15,128.40
  4. Step 4: Simplify right side
    45,117.12x = 1,023,949,112.76
  5. Step 5: Solve for x
    x = 1,023,949,112.76/45,117.12
  6. Step 6: Final answer
    x = 22,695.36

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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.