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Finding the Fourth Proportional to 78,888.99, 108,870.89 and 48,252.49

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Solution

The fourth proportional to 78,888.99, 108,870.89 and 48,252.49 is: 66,590.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,888.99 : 108,870.89 = 48,252.49 : x
  2. Step 2: Convert to fraction form
    78,888.99/108,870.89 = 48,252.49/x
  3. Step 3: Cross multiply
    78,888.99x = 108,870.89 × 48,252.49
  4. Step 4: Simplify right side
    78,888.99x = 5,253,291,289.00
  5. Step 5: Solve for x
    x = 5,253,291,289.00/78,888.99
  6. Step 6: Final answer
    x = 66,590.93

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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.