Home / 76,413.29-105,451.26-42,422.45

Finding the Fourth Proportional to 76,413.29, 105,451.26 and 42,422.45

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Solution

The fourth proportional to 76,413.29, 105,451.26 and 42,422.45 is: 58,543.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,413.29 : 105,451.26 = 42,422.45 : x
  2. Step 2: Convert to fraction form
    76,413.29/105,451.26 = 42,422.45/x
  3. Step 3: Cross multiply
    76,413.29x = 105,451.26 × 42,422.45
  4. Step 4: Simplify right side
    76,413.29x = 4,473,500,804.79
  5. Step 5: Solve for x
    x = 4,473,500,804.79/76,413.29
  6. Step 6: Final answer
    x = 58,543.49

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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.