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Finding the Fourth Proportional to 61,148.80, 84,349.60 and 38,451.86

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Solution

The fourth proportional to 61,148.80, 84,349.60 and 38,451.86 is: 53,041.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,148.80 : 84,349.60 = 38,451.86 : x
  2. Step 2: Convert to fraction form
    61,148.80/84,349.60 = 38,451.86/x
  3. Step 3: Cross multiply
    61,148.80x = 84,349.60 × 38,451.86
  4. Step 4: Simplify right side
    61,148.80x = 3,243,398,818.00
  5. Step 5: Solve for x
    x = 3,243,398,818.00/61,148.80
  6. Step 6: Final answer
    x = 53,041.09

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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.