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Finding the Fourth Proportional to 78,258.39, 107,971.65 and 44,262.69

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Solution

The fourth proportional to 78,258.39, 107,971.65 and 44,262.69 is: 61,068.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,258.39 : 107,971.65 = 44,262.69 : x
  2. Step 2: Convert to fraction form
    78,258.39/107,971.65 = 44,262.69/x
  3. Step 3: Cross multiply
    78,258.39x = 107,971.65 × 44,262.69
  4. Step 4: Simplify right side
    78,258.39x = 4,779,115,672.74
  5. Step 5: Solve for x
    x = 4,779,115,672.74/78,258.39
  6. Step 6: Final answer
    x = 61,068.41

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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.