Home / 65,631.45-90,539.85-42,960.45

Finding the Fourth Proportional to 65,631.45, 90,539.85 and 42,960.45

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Solution

The fourth proportional to 65,631.45, 90,539.85 and 42,960.45 is: 59,264.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,631.45 : 90,539.85 = 42,960.45 : x
  2. Step 2: Convert to fraction form
    65,631.45/90,539.85 = 42,960.45/x
  3. Step 3: Cross multiply
    65,631.45x = 90,539.85 × 42,960.45
  4. Step 4: Simplify right side
    65,631.45x = 3,889,632,698.93
  5. Step 5: Solve for x
    x = 3,889,632,698.93/65,631.45
  6. Step 6: Final answer
    x = 59,264.77

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1.5x scale

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.