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Finding the Fourth Proportional to 78,946.92, 118,421.46 and 26,356.32

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Solution

The fourth proportional to 78,946.92, 118,421.46 and 26,356.32 is: 39,534.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,946.92 : 118,421.46 = 26,356.32 : x
  2. Step 2: Convert to fraction form
    78,946.92/118,421.46 = 26,356.32/x
  3. Step 3: Cross multiply
    78,946.92x = 118,421.46 × 26,356.32
  4. Step 4: Simplify right side
    78,946.92x = 3,121,153,894.63
  5. Step 5: Solve for x
    x = 3,121,153,894.63/78,946.92
  6. Step 6: Final answer
    x = 39,534.84

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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.