Home / 80,829.18-111,547.73-45,019.20

Finding the Fourth Proportional to 80,829.18, 111,547.73 and 45,019.20

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Solution

The fourth proportional to 80,829.18, 111,547.73 and 45,019.20 is: 62,128.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,829.18 : 111,547.73 = 45,019.20 : x
  2. Step 2: Convert to fraction form
    80,829.18/111,547.73 = 45,019.20/x
  3. Step 3: Cross multiply
    80,829.18x = 111,547.73 × 45,019.20
  4. Step 4: Simplify right side
    80,829.18x = 5,021,789,341.32
  5. Step 5: Solve for x
    x = 5,021,789,341.32/80,829.18
  6. Step 6: Final answer
    x = 62,128.42

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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.