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Finding the Fourth Proportional to 84,010.80, 125,870.40 and 54,413.40

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Solution

The fourth proportional to 84,010.80, 125,870.40 and 54,413.40 is: 81,525.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,010.80 : 125,870.40 = 54,413.40 : x
  2. Step 2: Convert to fraction form
    84,010.80/125,870.40 = 54,413.40/x
  3. Step 3: Cross multiply
    84,010.80x = 125,870.40 × 54,413.40
  4. Step 4: Simplify right side
    84,010.80x = 6,849,036,423.36
  5. Step 5: Solve for x
    x = 6,849,036,423.36/84,010.80
  6. Step 6: Final answer
    x = 81,525.67

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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.