Home / 72,089.67-99,457.35-45,222.38

Finding the Fourth Proportional to 72,089.67, 99,457.35 and 45,222.38

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Solution

The fourth proportional to 72,089.67, 99,457.35 and 45,222.38 is: 62,390.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,089.67 : 99,457.35 = 45,222.38 : x
  2. Step 2: Convert to fraction form
    72,089.67/99,457.35 = 45,222.38/x
  3. Step 3: Cross multiply
    72,089.67x = 99,457.35 × 45,222.38
  4. Step 4: Simplify right side
    72,089.67x = 4,497,697,578.21
  5. Step 5: Solve for x
    x = 4,497,697,578.21/72,089.67
  6. Step 6: Final answer
    x = 62,390.32

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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.