Home / 81,283.55-112,209.65-61,148.12

Finding the Fourth Proportional to 81,283.55, 112,209.65 and 61,148.12

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Solution

The fourth proportional to 81,283.55, 112,209.65 and 61,148.12 is: 84,413.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,283.55 : 112,209.65 = 61,148.12 : x
  2. Step 2: Convert to fraction form
    81,283.55/112,209.65 = 61,148.12/x
  3. Step 3: Cross multiply
    81,283.55x = 112,209.65 × 61,148.12
  4. Step 4: Simplify right side
    81,283.55x = 6,861,408,849.83
  5. Step 5: Solve for x
    x = 6,861,408,849.83/81,283.55
  6. Step 6: Final answer
    x = 84,413.25

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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.