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Finding the Fourth Proportional to 72,019.95, 99,421.13 and 41,799.41

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Solution

The fourth proportional to 72,019.95, 99,421.13 and 41,799.41 is: 57,702.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,019.95 : 99,421.13 = 41,799.41 : x
  2. Step 2: Convert to fraction form
    72,019.95/99,421.13 = 41,799.41/x
  3. Step 3: Cross multiply
    72,019.95x = 99,421.13 × 41,799.41
  4. Step 4: Simplify right side
    72,019.95x = 4,155,744,182.93
  5. Step 5: Solve for x
    x = 4,155,744,182.93/72,019.95
  6. Step 6: Final answer
    x = 57,702.68

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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.