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Finding the Fourth Proportional to 72,526.78, 100,085.35 and 40,259.49

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Solution

The fourth proportional to 72,526.78, 100,085.35 and 40,259.49 is: 55,557.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,526.78 : 100,085.35 = 40,259.49 : x
  2. Step 2: Convert to fraction form
    72,526.78/100,085.35 = 40,259.49/x
  3. Step 3: Cross multiply
    72,526.78x = 100,085.35 × 40,259.49
  4. Step 4: Simplify right side
    72,526.78x = 4,029,385,147.47
  5. Step 5: Solve for x
    x = 4,029,385,147.47/72,526.78
  6. Step 6: Final answer
    x = 55,557.20

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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.