Home / 65,478.17-90,337.88-39,975.32

Finding the Fourth Proportional to 65,478.17, 90,337.88 and 39,975.32

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Solution

The fourth proportional to 65,478.17, 90,337.88 and 39,975.32 is: 55,152.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,478.17 : 90,337.88 = 39,975.32 : x
  2. Step 2: Convert to fraction form
    65,478.17/90,337.88 = 39,975.32/x
  3. Step 3: Cross multiply
    65,478.17x = 90,337.88 × 39,975.32
  4. Step 4: Simplify right side
    65,478.17x = 3,611,285,986.90
  5. Step 5: Solve for x
    x = 3,611,285,986.90/65,478.17
  6. Step 6: Final answer
    x = 55,152.52

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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.