Home / 81,019.76-111,829.36-47,038.89

Finding the Fourth Proportional to 81,019.76, 111,829.36 and 47,038.89

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Solution

The fourth proportional to 81,019.76, 111,829.36 and 47,038.89 is: 64,926.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,019.76 : 111,829.36 = 47,038.89 : x
  2. Step 2: Convert to fraction form
    81,019.76/111,829.36 = 47,038.89/x
  3. Step 3: Cross multiply
    81,019.76x = 111,829.36 × 47,038.89
  4. Step 4: Simplify right side
    81,019.76x = 5,260,328,963.81
  5. Step 5: Solve for x
    x = 5,260,328,963.81/81,019.76
  6. Step 6: Final answer
    x = 64,926.49

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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.