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Finding the Fourth Proportional to 83,430.52, 115,256.46 and 67,619.32

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Solution

The fourth proportional to 83,430.52, 115,256.46 and 67,619.32 is: 93,413.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,430.52 : 115,256.46 = 67,619.32 : x
  2. Step 2: Convert to fraction form
    83,430.52/115,256.46 = 67,619.32/x
  3. Step 3: Cross multiply
    83,430.52x = 115,256.46 × 67,619.32
  4. Step 4: Simplify right side
    83,430.52x = 7,793,563,450.81
  5. Step 5: Solve for x
    x = 7,793,563,450.81/83,430.52
  6. Step 6: Final answer
    x = 93,413.82

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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.