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Finding the Fourth Proportional to 78,960.64, 118,459.55 and 25,652.44

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Solution

The fourth proportional to 78,960.64, 118,459.55 and 25,652.44 is: 38,484.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,960.64 : 118,459.55 = 25,652.44 : x
  2. Step 2: Convert to fraction form
    78,960.64/118,459.55 = 25,652.44/x
  3. Step 3: Cross multiply
    78,960.64x = 118,459.55 × 25,652.44
  4. Step 4: Simplify right side
    78,960.64x = 3,038,776,498.80
  5. Step 5: Solve for x
    x = 3,038,776,498.80/78,960.64
  6. Step 6: Final answer
    x = 38,484.70

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1.5x scale

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.