Home / 98,043.72-135,307.02-55,605

Finding the Fourth Proportional to 98,043.72, 135,307.02 and 55,605

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Solution

The fourth proportional to 98,043.72, 135,307.02 and 55,605 is: 76,738.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,043.72 : 135,307.02 = 55,605 : x
  2. Step 2: Convert to fraction form
    98,043.72/135,307.02 = 55,605/x
  3. Step 3: Cross multiply
    98,043.72x = 135,307.02 × 55,605
  4. Step 4: Simplify right side
    98,043.72x = 7,523,746,847.10
  5. Step 5: Solve for x
    x = 7,523,746,847.10/98,043.72
  6. Step 6: Final answer
    x = 76,738.69

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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.