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Finding the Fourth Proportional to 72,982.80, 109,466.10 and 59,812.20

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Solution

The fourth proportional to 72,982.80, 109,466.10 and 59,812.20 is: 89,711.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,982.80 : 109,466.10 = 59,812.20 : x
  2. Step 2: Convert to fraction form
    72,982.80/109,466.10 = 59,812.20/x
  3. Step 3: Cross multiply
    72,982.80x = 109,466.10 × 59,812.20
  4. Step 4: Simplify right side
    72,982.80x = 6,547,408,266.42
  5. Step 5: Solve for x
    x = 6,547,408,266.42/72,982.80
  6. Step 6: Final answer
    x = 89,711.66

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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.