Home / 93,413.43-128,876.85-71,909.75

Finding the Fourth Proportional to 93,413.43, 128,876.85 and 71,909.75

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Solution

The fourth proportional to 93,413.43, 128,876.85 and 71,909.75 is: 99,209.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,413.43 : 128,876.85 = 71,909.75 : x
  2. Step 2: Convert to fraction form
    93,413.43/128,876.85 = 71,909.75/x
  3. Step 3: Cross multiply
    93,413.43x = 128,876.85 × 71,909.75
  4. Step 4: Simplify right side
    93,413.43x = 9,267,502,064.29
  5. Step 5: Solve for x
    x = 9,267,502,064.29/93,413.43
  6. Step 6: Final answer
    x = 99,209.53

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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.