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Finding the Fourth Proportional to 63,130.78, 87,122.55 and 34,839.10

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Solution

The fourth proportional to 63,130.78, 87,122.55 and 34,839.10 is: 48,079.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,130.78 : 87,122.55 = 34,839.10 : x
  2. Step 2: Convert to fraction form
    63,130.78/87,122.55 = 34,839.10/x
  3. Step 3: Cross multiply
    63,130.78x = 87,122.55 × 34,839.10
  4. Step 4: Simplify right side
    63,130.78x = 3,035,271,231.71
  5. Step 5: Solve for x
    x = 3,035,271,231.71/63,130.78
  6. Step 6: Final answer
    x = 48,079.10

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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.