Home / 72,421.02-99,944.39-45,213.21

Finding the Fourth Proportional to 72,421.02, 99,944.39 and 45,213.21

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Solution

The fourth proportional to 72,421.02, 99,944.39 and 45,213.21 is: 62,396.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,421.02 : 99,944.39 = 45,213.21 : x
  2. Step 2: Convert to fraction form
    72,421.02/99,944.39 = 45,213.21/x
  3. Step 3: Cross multiply
    72,421.02x = 99,944.39 × 45,213.21
  4. Step 4: Simplify right side
    72,421.02x = 4,518,806,806.42
  5. Step 5: Solve for x
    x = 4,518,806,806.42/72,421.02
  6. Step 6: Final answer
    x = 62,396.34

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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.