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Finding the Fourth Proportional to 72,627.91, 100,208.75 and 42,395.87

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Solution

The fourth proportional to 72,627.91, 100,208.75 and 42,395.87 is: 58,495.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,627.91 : 100,208.75 = 42,395.87 : x
  2. Step 2: Convert to fraction form
    72,627.91/100,208.75 = 42,395.87/x
  3. Step 3: Cross multiply
    72,627.91x = 100,208.75 × 42,395.87
  4. Step 4: Simplify right side
    72,627.91x = 4,248,437,176.41
  5. Step 5: Solve for x
    x = 4,248,437,176.41/72,627.91
  6. Step 6: Final answer
    x = 58,495.93

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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.