Home / 77,984.64-107,706.24-52,790.40

Finding the Fourth Proportional to 77,984.64, 107,706.24 and 52,790.40

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Solution

The fourth proportional to 77,984.64, 107,706.24 and 52,790.40 is: 72,909.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,984.64 : 107,706.24 = 52,790.40 : x
  2. Step 2: Convert to fraction form
    77,984.64/107,706.24 = 52,790.40/x
  3. Step 3: Cross multiply
    77,984.64x = 107,706.24 × 52,790.40
  4. Step 4: Simplify right side
    77,984.64x = 5,685,855,492.10
  5. Step 5: Solve for x
    x = 5,685,855,492.10/77,984.64
  6. Step 6: Final answer
    x = 72,909.94

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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.