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Finding the Fourth Proportional to 82,803.80, 124,205.70 and 72,962.30

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Solution

The fourth proportional to 82,803.80, 124,205.70 and 72,962.30 is: 109,443.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,803.80 : 124,205.70 = 72,962.30 : x
  2. Step 2: Convert to fraction form
    82,803.80/124,205.70 = 72,962.30/x
  3. Step 3: Cross multiply
    82,803.80x = 124,205.70 × 72,962.30
  4. Step 4: Simplify right side
    82,803.80x = 9,062,333,545.11
  5. Step 5: Solve for x
    x = 9,062,333,545.11/82,803.80
  6. Step 6: Final answer
    x = 109,443.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.