Home / 72,148.05-99,564.08-40,316.94

Finding the Fourth Proportional to 72,148.05, 99,564.08 and 40,316.94

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Solution

The fourth proportional to 72,148.05, 99,564.08 and 40,316.94 is: 55,637.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,148.05 : 99,564.08 = 40,316.94 : x
  2. Step 2: Convert to fraction form
    72,148.05/99,564.08 = 40,316.94/x
  3. Step 3: Cross multiply
    72,148.05x = 99,564.08 × 40,316.94
  4. Step 4: Simplify right side
    72,148.05x = 4,014,118,837.93
  5. Step 5: Solve for x
    x = 4,014,118,837.93/72,148.05
  6. Step 6: Final answer
    x = 55,637.25

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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.