Home / 42,740.93-64,117.65-13,161.35

Finding the Fourth Proportional to 42,740.93, 64,117.65 and 13,161.35

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Solution

The fourth proportional to 42,740.93, 64,117.65 and 13,161.35 is: 19,743.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,740.93 : 64,117.65 = 13,161.35 : x
  2. Step 2: Convert to fraction form
    42,740.93/64,117.65 = 13,161.35/x
  3. Step 3: Cross multiply
    42,740.93x = 64,117.65 × 13,161.35
  4. Step 4: Simplify right side
    42,740.93x = 843,874,832.83
  5. Step 5: Solve for x
    x = 843,874,832.83/42,740.93
  6. Step 6: Final answer
    x = 19,743.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.