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Finding the Fourth Proportional to 61,148.80, 84,390.24 and 36,003.20

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Solution

The fourth proportional to 61,148.80, 84,390.24 and 36,003.20 is: 49,687.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,148.80 : 84,390.24 = 36,003.20 : x
  2. Step 2: Convert to fraction form
    61,148.80/84,390.24 = 36,003.20/x
  3. Step 3: Cross multiply
    61,148.80x = 84,390.24 × 36,003.20
  4. Step 4: Simplify right side
    61,148.80x = 3,038,318,688.77
  5. Step 5: Solve for x
    x = 3,038,318,688.77/61,148.80
  6. Step 6: Final answer
    x = 49,687.30

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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.