Home / 42,738.93-64,114.65-13,159.35

Finding the Fourth Proportional to 42,738.93, 64,114.65 and 13,159.35

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Solution

The fourth proportional to 42,738.93, 64,114.65 and 13,159.35 is: 19,740.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,738.93 : 64,114.65 = 13,159.35 : x
  2. Step 2: Convert to fraction form
    42,738.93/64,114.65 = 13,159.35/x
  3. Step 3: Cross multiply
    42,738.93x = 64,114.65 × 13,159.35
  4. Step 4: Simplify right side
    42,738.93x = 843,707,119.48
  5. Step 5: Solve for x
    x = 843,707,119.48/42,738.93
  6. Step 6: Final answer
    x = 19,740.95

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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.