Home / 88,143.51-121,637.66-47,856.95

Finding the Fourth Proportional to 88,143.51, 121,637.66 and 47,856.95

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Solution

The fourth proportional to 88,143.51, 121,637.66 and 47,856.95 is: 66,042.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,143.51 : 121,637.66 = 47,856.95 : x
  2. Step 2: Convert to fraction form
    88,143.51/121,637.66 = 47,856.95/x
  3. Step 3: Cross multiply
    88,143.51x = 121,637.66 × 47,856.95
  4. Step 4: Simplify right side
    88,143.51x = 5,821,207,412.74
  5. Step 5: Solve for x
    x = 5,821,207,412.74/88,143.51
  6. Step 6: Final answer
    x = 66,042.38

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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.