Home / 88,143.78-121,637.72-47,856.74

Finding the Fourth Proportional to 88,143.78, 121,637.72 and 47,856.74

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Solution

The fourth proportional to 88,143.78, 121,637.72 and 47,856.74 is: 66,041.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,143.78 : 121,637.72 = 47,856.74 : x
  2. Step 2: Convert to fraction form
    88,143.78/121,637.72 = 47,856.74/x
  3. Step 3: Cross multiply
    88,143.78x = 121,637.72 × 47,856.74
  4. Step 4: Simplify right side
    88,143.78x = 5,821,184,740.23
  5. Step 5: Solve for x
    x = 5,821,184,740.23/88,143.78
  6. Step 6: Final answer
    x = 66,041.92

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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.