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Finding the Fourth Proportional to 78,830.51, 108,788.65 and 44,838.13

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Solution

The fourth proportional to 78,830.51, 108,788.65 and 44,838.13 is: 61,878.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,830.51 : 108,788.65 = 44,838.13 : x
  2. Step 2: Convert to fraction form
    78,830.51/108,788.65 = 44,838.13/x
  3. Step 3: Cross multiply
    78,830.51x = 108,788.65 × 44,838.13
  4. Step 4: Simplify right side
    78,830.51x = 4,877,879,471.35
  5. Step 5: Solve for x
    x = 4,877,879,471.35/78,830.51
  6. Step 6: Final answer
    x = 61,878.06

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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.