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Finding the Fourth Proportional to 78,695.71, 118,083.26 and 38,713.01

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Solution

The fourth proportional to 78,695.71, 118,083.26 and 38,713.01 is: 58,089.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,695.71 : 118,083.26 = 38,713.01 : x
  2. Step 2: Convert to fraction form
    78,695.71/118,083.26 = 38,713.01/x
  3. Step 3: Cross multiply
    78,695.71x = 118,083.26 × 38,713.01
  4. Step 4: Simplify right side
    78,695.71x = 4,571,358,526.86
  5. Step 5: Solve for x
    x = 4,571,358,526.86/78,695.71
  6. Step 6: Final answer
    x = 58,089.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.