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Finding the Fourth Proportional to 78,503.06, 108,259.80 and 60,569.66

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Solution

The fourth proportional to 78,503.06, 108,259.80 and 60,569.66 is: 83,528.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,503.06 : 108,259.80 = 60,569.66 : x
  2. Step 2: Convert to fraction form
    78,503.06/108,259.80 = 60,569.66/x
  3. Step 3: Cross multiply
    78,503.06x = 108,259.80 × 60,569.66
  4. Step 4: Simplify right side
    78,503.06x = 6,557,259,277.67
  5. Step 5: Solve for x
    x = 6,557,259,277.67/78,503.06
  6. Step 6: Final answer
    x = 83,528.71

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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.